KnowRoaming Travel eSIMs

KnowRoaming Travel eSIMs

4G/5G data + affordable plans

171 ratings
88 reviews
Free

Details

  • Released
  • Updated
  • May 28, 2013
  • July 25, 2026
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About

Stay connected globally with digital SIM technology. Access affordable 4G/5G data in over 200 countries without physical SIM card swaps. Enjoy easy installation, low balance alerts, and reliable worldwide coverage for your travels.

eSIM for digital SIM activation
Data plans in 200+ countries
Affordable global coverage
No physical SIM card swapping
Easy installation and activation
Low balance alerts and top-ups
Mobile hotspot functionality
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What users say

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What's New in KnowRoaming Travel eSIMs

8.0.6

July 25, 2026

We regularly release app updates with bug fixes and improvements so you have the best possible customer experience.

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User reviews

Best eSIM provider there is

Work really well, no problem. Fast speed and reliable service

They claim they give

Afar giving 3Gb I haven’t use it I put my real bank card visa , but unfortunately they said package expired immediately they are scammer , I will recommend you try virgin esim or kolet eSIM

Response from developer

Hi, please reach out to our support so that this can be resolved, support@knowroaming.com

TBUVF3ZDZ2

TBUVF3ZDZ2

It’s

It’s very good

Easy and so fast

Amazing app, easy to use

User experience

🐞

Reported Bugs

503 issues

Cannot log in with old account

Bug

Physical SIM card expiration issues

Bug

Cannot access account online

Bug

Error messages

Bug

Website and app separate registrations

Bug

No confirmation email

Bug

Unstable network

Bug

Network drops frequently

Bug

Charged when no network

Bug

App crashy

Bug

Cannot register account

Bug

App doesn't connect

Bug

Charge for pay per use data

Bug

Use own data to activate

Bug

Complicated to use

Bug

Bugging most of time

Bug

Cannot log in with older accounts

Bug

Hours to get SIM recognized

Bug

Dollars disappeared

Bug

Location not recognized

Bug

Technical support issues

Bug

Phone still doesn't work

Bug

SIM sticker not shipped

Bug

App wouldn't accept serial number

Bug

Spotty quality

Bug

No LTE

Bug

Expensive lesson

Bug

Sneaky charges

Bug

Hassle returning home

Bug

Must purchase credit first

Bug

Credit evaporate

Bug

Deducting credit

Bug

Steep data prices

Bug

Connecting major issue

Bug

Call support every time

Bug

24-48 hours for data

Bug

Defeats purpose

Bug

Free WhatsApp removed

Bug

Reload card policy change

Bug

Get SIM in country instead

Bug

Poor quality calls

Bug

Overpriced rates

Bug

Unlimited data not unlimited

Bug

Throttled after small usage

Bug

Sneaky website packages

Bug

App deceiving

Bug

Horribly slow speeds

Bug

Stay away

Bug

Terrible customer service

Bug

Broken UI on older phones

Bug

Never quite worked

Bug

Headaches to use

Bug

Networks mostly 3G

Bug

Attitude when contacting support

Bug

Not for non-tech users

Bug

Extremely poor network service

Bug

Unusable network services

Bug

Frustrating airport experience

Bug

No network connection

Bug

Purchase home provider roaming

Bug

No Roaming

Bug

Switching SIMs is hassle

Bug

Constantly dropping data

Bug

Not reliable

Bug

Issues in every country

Bug

Excessive charges

Bug

Email support often

Bug

Complicated to engage service

Bug

Not intuitive to turn on/off

Bug

Slow data speed

Bug

Minor issues

Bug

Expensive rates

Bug

Text messages not supported

Bug

Some calling issues

Bug

Questionable roaming provider

Bug

Voice worked sometimes

Bug

Issues making calls

Bug

Menu items affected

Bug

Needs update for resolutions

Bug

Charging in USD for Canadians

Bug

No telephone contact

Bug

System overrides Wi-Fi

Bug

No flexibility to cancel

Bug

Costs more than free Wi-Fi

Bug

Crashes on older iOS

Bug

Services not working

Bug

Internet very slow

Bug

Not really reliable

Bug

Waiting for refund

Bug

Cannot tether or use hotspot

Bug

Not for non-technical people

Bug

Pre pre beta

Bug

Not a solution

Bug

USD rates for Canadians

Bug

Cumbersome to get going

Bug

Worse performance

Bug

Useless

Bug

No way to disable

Bug

Premature release without SIMs

Bug

Bad service

Bug

Bad app

Bug

Waste of money

Bug

Cannot log in with the old account

Bug

Physical card seems to expire soon

Bug

Cannot log in with older accounts

Bug

App is missing one of the main reasons for downloading it

Bug

Shows 'No active data plan' when clearly there is one

Bug

Website and app need separate registrations

Bug

Don’t always get a confirmation email after purchase

Bug

Physical SIM card seems to expire soon

Bug

Cannot log in with the old account

Bug

The physical card seems to expire soon

Bug

The phone number is important to me

Bug

Since announcement of sunset of physical SIM cards Knowroaming app cannot let you access your account

Bug

You cannot access online through a browser

Bug

They also won’t move any credits over to an eSIM

Bug

Very complicated

Bug

Wish to have face recognition

Bug

I can’t log in with older accounts

Bug

I used their sticker sim product

Bug

KnowRoaming decided to phase it out but does not offer to transfer credit to their new product

Bug

Not a company you should trust

Bug

Lots of alternatives out there

Bug

Do not use

Bug

之前的实体卡登录不进去了

Bug

也不能重置密码

Bug

账户彻底被删除了

Bug

不知道实体卡能用多久

Bug

我日

Bug

If you had a physical SIM with this app, this app now no longer works

Bug

Can’t login

Bug

Can’t reset password

Bug

Complete rug pull by this company

Bug

All prepaid credit and unused data packages will expire nine (9) months after the last prepaid credit purchase

Bug

You would expect a longer expiry from a travel sim but they just wiped out all of my credits

Bug

Just go with someone else

Bug

一直提示错误

Bug

网络错误

Bug

This app is missing one of the main reasons for downloading it - there is no total!

Bug

It lists each time data was used, and how much each time, but doesn’t give a total used/remaining!

Bug

Hopefully this gets fixed soon

Bug

Support told me that it doesn’t work with eSim but it does

Bug

They can give the total usage at any time if needed, but that makes work for them and us!

Bug

It also shows ‘No active data plan’ when clearly there is one

Bug

I’m also baffled that the website and app need separate registrations, and that we don’t always get a confirmation email after purchase

Bug

Without that, with the serial number, you can’t use the app, unless you thought to take a screenshot

Bug

We have always found their per-minute rates quite acceptable

Bug

When both our roaming phone numbers expired due to non-use during Covid the support team responded to an email within minutes and had us set up with new numbers just a few more minutes later

Bug

I’m impressed

Bug

We have used the service in the U.S., the U.K., Australia, Spain, Italy, France

Bug

Works well for us

Bug

I use 2 sims in my iPhone

Bug

Every other travel sim or local sim from other countries work fine but not this one

Bug

It makes the iPhone network cut out all the time

Bug

Slow connection on main sim when the KnowRoaming profile is installed,... and so many other little things make this too much of a hassle

Bug

No thanks

Bug

Quite cool but network drops 10 mins sometimes

Bug

Close to days then you’ll have no network yet you’ll be charged so disappointed

Bug

They told me their esim supports a cellular network which it does not

Bug

Now I wasted my money and have no coverage

Bug

Beware of them!

Bug

The app could have a way for us to receive SMS and text messages inside the app for the phone number we’ve got

Bug

I don’t think this Sim Card service is valuable, just full of charges, expensive service and no messaging services

Bug

Once you are out of your region, you can’t get service or receive messages, then why pay for it?

Bug

I am very disappointed and I wish all my money could be reimbursed, because this app is just propaganda

Bug

This app makes traveling much easier except the annoying activation process (which takes forever.)

Bug

The home page of this app seems like a proper 2020 Apple app…but when you want to check your plan or load funds into your account… it looks and feels like a 1999 app all of sudden

Bug

They are so obscure and I have no dam idea what should I do...And, WTH does load balance mean??

Bug

Is it even a correct grammar??

Bug

Be careful, they are stealing money from your account!!!

Bug

I purchased package global UNLIMITED FOR 1 day

Bug

After few hours they cancelled package and drain all credit that left on account

Bug

When i asked support, simple explanation was that i used too much internet and they canceled it

Bug

Total disaster, so be very careful

Bug

I would choose 0 stars but it’s not possible so i have to choose 1. :)

Bug

I have never been able to get this app to work without endless calls to Tech Support who tweaks settings from afar

Bug

And even then it is clunky and not reliable

Bug

Never again

Bug

The two stars is because Tech Support tries, if you can reach them, which is not automatic, since half the time the app doesn’t even work once you are abroad

Bug

It doesn’t work

Bug

It has way too many steps to follow and it just doesn’t work

Bug

The so called 24/7 WhatsApp support is unresponsive

Bug

I travel all over the world and my Know Roaming sim has become my saving grace

Bug

As you’ll read in other reviews, the payment system and interface definitely leaves a lot to be desired as it can be misleading and confusing, however, once you get your head around how the service works, it’s a breeze to use

Bug

Definitely recommend for anyone regularly travelling between countries, just be prepared to spend some time learning the interface and understanding the payment system before you start using data!

Bug

In principle, their product is a great deal and a cool concept

Bug

In action, it took HOURS after landing in NewYork for the SIM to be recognized

Bug

After 1 day, 17$ dollars disappeared from my account because no package kicked in

Bug

Service was basically not working for the following days because « location not recognized »

Bug

I ended up buying a T-Mobile travelers SIM, which I should have done in the first place

Bug

Don’t waste your money on this service

Bug

First trip I used it on was fine but every trip since then I waste so much time with technical support

Bug

The voice calling never works

Bug

The ReachMe forward service never works

Bug

Many many people have posted reviews how technical support says they are working on a case but months later it is still not resolved

Bug

It’s not much use if after several weeks your phone still doesn’t work and people can’t reach you or you can’t reach them

Bug

Just get a local SIM or try Apple’s e-sim

Bug

I’ve used KnowRoaming for data in several countries

Bug

At first we had some fails, but I’ve learned to plan ahead and contact customer support in advance, or upon arrival

Bug

With a little communication and instruction from customer support (who are quickly responsive) I’ve been able to work through any issues

Bug

However I think you need to be a tech comfortable user to do what is asked

Bug

I still use them because I’ve worked out how to do some of the configuration (outside of the app) and for me that ends up easier (and cheaper) than purchasing a local SIM

Bug

Plus WhatsApp is free within 30 days of a balance top-up

Bug

I bought the SIM sticker for a trip to the US

Bug

First I waited several weeks for my delivery and it was getting down to mere days before departure, only to be told that due to “error”, it hadn’t even been shipped yet

Bug

They sent it on priority and included a bonus unlimited data package

Bug

It’s too bad I couldn’t use a single thing I ordered because their app wouldn’t accept the serial number to activate the sticker, no matter what I tried

Bug

I ended up binning it and just buying a SIM in the States

Bug

When I came home and told them about it, they criticized me for not contacting support as soon as there was a problem (how was I going to do that with no service?) and refused to issue a refund as the package had been opened

Bug

What a rip-off

Bug

This is my second time that, I have used KnowRoaming as my roaming solution

Bug

I use their sticker product and it is very convenient

Bug

I can’t even register an account, not able to go past the second sign up screen on the iPad

Bug

Unfortunately, this app and service fail on multiple levels

Bug

The app is extremely crashy, and also requires the installation of a profile (for reasons that aren’t explained) that may let the company monitor your network traffic

Bug

Why?!

Bug

I’ve only tried the service in Mexico on TELCEL so far, and it’s just not good

Bug

Spotty quality if reception can be had at all, and no LTE, only 3G

Bug

The problem isn’t Telcel

Bug

Roaming using my own carrier’s SIM works just fine on LTE

Bug

It’s not as cheap as Know, but it actually works

Bug

Also be warned that the minimum recharge amount is $25, so even though service is only $4 a day, it ends up being a very expensive lesson to learn

Bug

I used the app during my recent trip to Europe and am not exactly trilled

Bug

The idea is great, but it doesn’t quite work as it is supposed to

Bug

It did connect to the new country’s network many times, but then it wouldn’t on many other times

Bug

I’ve restarted my phone countless times

Bug

Their data is quite expensive and in my case went on getting sucked up by something until I had to purchase more

Bug

I couldn’t figure out where that data was going (I’m an experienced user, have spent many months in South America tracking every bit of data, using different provider)

Bug

In way too many cases the phone connection wouldn’t work both ways and that was the reason to go with this service in the first place

Bug

If I wanted mobile data only there’s much better options out there

Bug

And on the top of it, they kept charging me for the forwarding number long after I came back home

Bug

As others have pointed out they do seem to be sneaky about their charges

Bug

Ah, and going back to the home network was a hassle too

Bug

Thought at some point will have to go and buy a new SIM card...

Bug

I don’t think I’ll be using that service again

Bug

Not recommended

Bug

Absolute fraudsters

Bug

You can't purchase a data package until you first add credit to your account

Bug

Even if you just want a 1-day $7.99 data package you must first purchase a minimum $25 of credit

Bug

To add insult to injury all credit expires after just 9 months with zero warning

Bug

Buy a local SIM instead

Bug

Make sure you are connected to WiFi while you are setting up the SIM, or you'll quickly find your credit evaporate

Bug

The reason being...

Bug

You can't simply buy a data package with your credit card

Bug

You must first add your card details & then add credit to your account (in $25, $50, $75, $100 or $150 blocks)

Bug

So if you want to buy an $80 roaming package you have no option but to add $100 of credit to your account

Bug

That's just annoying, but this is frustrating...

Bug

The second you add credit to your account KnowRoaming by default puts you onto Pay As You Go, thus begins deducting credit because the app itself is consuming data

Bug

My $150 top up was reduced $148.20 literally within 10 seconds of adding credit

Bug

I switched data off at this point & found a WiFi hotspot but I would estimate if I remained on cellular it would have cost at least $5 simply to purchase a data package

Bug

Not happy so far

Bug

Will update review in due course

Bug

I’ve been using knowroaming for nearly a year now travelling around the world

Bug

It’s got some conveniences, but the data prices are steep, and if you’re entering new countries connecting was a major issue

Bug

I had to essentially call support every time I arrived in a new location

Bug

The service was helpful, but it was usually at least 24-48 hours before I got data in a new country

Bug

The company is great in concept, but this really defeats the purpose and so can’t really recommend them

Bug

Buy a local SIM card instead

Bug

Know roaming was great when it provided you with free WhatsApp

Bug

I found myself using the roaming SIM quite often

Bug

But now that they took that away and only give 30 days of it every time you reload the card I figure why bother

Bug

I’m better off just getting a SIM in the country I’m visiting

Bug

Their app doesn't connect and will charge you for pay per use data TRYING TO CONNECT to the already purchased a plan

Bug

Makes total sense

Bug

They use their own data to activate an unlimited data plan that won't connect unless connected to data go figure

Bug

Great job guys

Bug

(Sarcasm)

Bug

These bastards are sneaky !

Bug

Firstly I bought 2 sims to use the free whatsapp and after 2 months they change the policy and now they required to buy 25$ credit for 30 days of free whatsapp !

Bug

Moreover the app doesn’t work well !

Bug

Calls always cutting : really poor quality !

Bug

It’s complicate to use !

Bug

It’s bugging most of the time so I have to relaunched the app 2-3 times to make it right

Bug

The rate are completely overpriced !!

Bug

I only bought sims card for free whatsapp and since the new policy ... completely useless !

Bug

Waste of money at all !!

Bug

The company has many drawbacks

Bug

1) their unlimited data is not unlimited and you will be throttled after very small data usage

Bug

2) they stop allowing unlimited whatsapp usage

Bug

3) they are sneaky and do not tell you that you can buy packages on the website,

Bug

The app is deceiving where you can only reload certain amounts in large increments

Bug

4) the speeds can be horribly slow and the pricing is expensive for what is offered

Bug

I would honestly stay away from them

Bug

When they whatsapp for free it was great but now its a different story

Bug

Use wifi and save money

Bug

It is used in several Eu countries, UK and the GCC

Bug

Very excellent and superb customer service

Bug

Only the interface problem in Andorra is not working

Bug

We need update for iPhone X

Bug

Thank you for konwromaing team

Bug

The rates are not amazing but acceptable

Bug

You can get a temporary local number anywhere you travel, still receive calls on home number and the service can bypass the great firewall of China!

Bug

What’s not to like?

Bug

I travelled through England, Switzerland, Italy, Germany, Czech Republic, and Hungary over the course of a few weeks and rarely encountered problems at all

Bug

And the problems I did encounter were completely expected

Bug

For example, on New Years in a densely populated urban space, I had trouble getting decent internet speeds until I moved away from the area of activity, which isn’t uncommon

Bug

I’m not sure what everyone else here is dealing with or expecting, but I think it’s doing what it should be

Bug

It worked well for me

Bug

Not able to enter password or paste password in properly as text box doesn’t appear or slide up when your typing

Bug

Needs a refresh

Bug

I wanted this app to work!

Bug

We used it first in Toronto

Bug

After 45 min on help line there was no way to make it work

Bug

I used it in Bangkok

Bug

Again, it took 30 min on a help line to make one phone call to USA

Bug

Never worked again

Bug

Tried it in London and ended up buying a local SIM card

Bug

Needed it unexpectedly in Budapest and could never make it engage

Bug

Don’t waste any more time on this app

Bug

Most networks are 3G, at best

Bug

But the headaches to use this service are huge

Bug

I got the sticker SIM card and it is so problematic I tore it off and threw it away

Bug

That they expect you to call or email them when you have a problem is not a good solution if you have no data service because the product does not work

Bug

They also have quite a bit of attitude when you contact them for help

Bug

I can’t imagine non-tech users being happy with this service

Bug

Love this service

Bug

Great rates and top shelf customer service

Bug

If you travel you need this

Bug

While my initial experience with KnowRoaming was positive, I have to say that the quality of the network service I received on my last and current trip abroad has been extremely poor

Bug

If KnowRoaming cannot ensure that network services work in a given destination it should be removed from the list of supported destinations

Bug

Even after following the recommendations of their support staff, I found network services to essentially be unusable

Bug

I recommend that users think twice before using KnowRoaming

Bug

Instead I would recommend that travelers either purchase a local SIM card (best option) or roam using their network provider

Bug

Do not waste your money relying on KnowRoaming

Bug

Landed in Newark terminal, app kept prompting "no network connection" though AT&T was displayed on home screen

Bug

20 min of trying to install data roaming profile led to failure and my purchase of a roaming package offered by my home provider

Bug

They know how to make roaming easy and inexpensive

Bug

Don't waste your time with this product

Bug

While the concept of this app is brilliant, the execution is far from it

Bug

I've used it in Costa Rica and Hawaii with mixed results

Bug

Switching from KnowRoaming sim to Home sim and visa versa is always a hassle needing multiple attempts

Bug

On a recent trip to New York City this app was a complete fail

Bug

Constantly dropping data coverage to the point I just gave up

Bug

App should be called NoRoaming........

Bug

I'll be returning to using the roaming available from my carrier

Bug

Don't waste your money here people! 😤

Bug

I constantly have issues

Bug

Every country I visit I have to contact support to get them to tell me which carrier to use

Bug

They should put a list of supported carriers for each country they support

Bug

Other times it takes a few hours to get working and just recently I could reload credits on it and it wasn't reporting usage

Bug

If it want for the excessive charges on my carrier at home I would never use this

Bug

Prepare to email support often!

Bug

This app supports several KnowRoaming cell phone travel products, including "global" phone SIM cards which may be used in many countries (without buying individual SIMs for each country visited)

Bug

The Global SIM card is easy to install, and, in combination with this app, works very well

Bug

The app's designers have worked hard to keep the user interface clear and simple, and it was easy to get started using in-app instructions, a tutorial, and on-web "help" resources

Bug

The Global SIMM comes with a very handy instruction sheet and even a SIM card removal pin

Bug

Unfortunately, it's still a bit "complicated" to engage the service when traveing abroad, and to "disengage" it when returning home

Bug

That's because there are several distinct "systems" working together to give KnowRoaming its functionality

Bug

For example: SMS text messaging doesn't work in KnowRoaming, BUT, KnowRoaming automatically allows 100% free use of What'sApp, for texts, phone calls and video calls

Bug

So as long as you remember not to use your customary texting app, and switch to What'sApp when you're using KnowRoaming, it's fine,

Bug

Likewise, although KnowRoaming gives users "free" U.S. and U.K. domestic phone numbers, AND allows/facilitates in-app purchase of local phone numbers for eaxh country... it's not possible to accept calls on BOTH of those numbers when abroad

Bug

Turning this system "on" (when traveling) and "off" (when at home) is not at all intuitive, but it works!

Bug

Bottom line: This product works extremely well, saves money (compared to pay-as-you-go data subscriptions) and provides local phone numbers... it requires a bit of study to be sure users are taking advantage of what the app offers

Bug

Used the sim sticker in Iceland for whatsapp, works amazing!

Bug

However the data speed is a bit slow at 3G

Bug

Love knowroaming!

Bug

Works really well and their support is excellent

Bug

This is a great way to save money and stick it to wireless companies with their sky high wireless roaming fees

Bug

I travel for a living and I've been using the service since last September

Bug

There was some minor issues at first and sometimes it takes several minutes for the chip to pickup a network but once it gets going it's awesome

Bug

I personally like their unlimited data packages especially in foreign countries where wifi may not be readily available

Bug

Also, they partnered with WhatsApp and you can use their service for free anywhere in the world

Bug

Sim works on and off but the support team is responsive and helpful

Bug

These KnowRoaming people know what they're doing!

Bug

You get their sim sticker and it's like you've got a local Cell phone in any country you visit

Bug

Magic!

Bug

Fantastic support by phone, too

Bug

(The problem was all mine but they figured it out and didn't make me feel dumb about it. )

Bug

I also use their international long distance when I'm home

Bug

Totally seamless

Bug

Definitely good, but still buggy when it comes to switching between home and abroad, and vice versa

Bug

The app also seems to lock up when activating a data package

Bug

This worked great for me on a recent trip to Canada and the US...

Bug

Wish it was slightly cheaper but still just about worth it for unlimited data...

Bug

Contrary to a previous review, you can actually disable it if you want to...

Bug

My only slightly tricky moment was reactivating data on my home network once back in the UK - in the end had to delete the KnowRoaming profile...

Bug

Got the KnowRoaming sticker a few weeks ago

Bug

Have already used it in U.S., Bermuda, Colombia, Panama, Ecuador and Peru

Bug

Latin America has great connectivity in the cities and the packages are well worth it

Bug

I have a VoIP service app for my US number and it works perfectly over the 3G service I get with KnowRoaming so I haven't used the call function yet

Bug

I've had no big problems switching between countries; sometimes I have to reset the phone, but no big deal

Bug

Sometimes I have to reset the app before the package starts working and it always takes a few cents off my load so I can log in and activate the package; that doesn't seem very fair haha..

Bug

Otherwise, this is one of the best inventions I've seen for someone like me who travels constantly

Bug

Yes, $8 a day is a little much in some of the countries, but for no hassle/no registration/finding a mobile phone shop in every country, it simply can't be beat and is well worth it; also cheaper than most or all of the "Global Sim Cards" out there

Bug

I still have one for the few countries KnowRoaming doesn't support, but this is my go-to from now on

Bug

Bravo

Bug

Expensive rates

Bug

Was a waiste of the money to buy the card and to fill with credit

Bug

Traveled to multiple countries and not one fair rate

Bug

The app locked my phone so I couldn't receive calls on my number

Bug

Not sure how they are in business

Bug

Don't support this company

Bug

Have given this thing so many chances and blown so much money

Bug

First trip data took forever to add then text and calling did not work

Bug

Next trip every time I went to the page to add a data package it crashed

Bug

Wasted $10 just trying to set it up

Bug

This is such a waste of money and time

Bug

Customer service is also no help

Bug

Probably easier and cheaper to just pay regular carrier fees at this point

Bug

I've used it on several trips and it seem to install differently each time when switching to/from home and roaming

Bug

Very confusing and the help files are practically useless

Bug

Text messages to your phone number will not work with this app

Bug

My last trip didn't go well as I couldn't receive incoming phone calls

Bug

When I returned home my data wouldn't work and my voicemail was diverted to some service in Arabic

Bug

(July 2015)

Bug

Another trip to the US and again no end of problems

Bug

Certificates don't install without multiple try's

Bug

Keeps loosing connection to Knowroaming

Bug

Data to default T-Mobile doesn't work despite tech support saying I'm connected ( showed 200k transferred so connected but so slow nothing loads)

Bug

Text messages do not often work

Bug

Last text to Knowroaming worked, but after a couple of hours now they don't - show as not delivered

Bug

The call to tech support wouldn't allow me to leave a message after hitting 5 (as per the prompt) and waited 12 minutes for them to pick up (then the tech said no calls were waiting... so their own phones don't even seem to work

Bug

They walked me through setup to connect with AT&T and now data works

Bug

Given you need an unlocked phone, maybe a local SIM is a better idea and pay the roaming to download texts once a day, and use Skype to check voicemail

Bug

It just isn't worth the frustration of needing to phone tech support, waiting on hold, having them fix it, then a few hours later it doesn't work again

Bug

Overall very disappointed

Bug

I used it in France in May 2015 and it worked fine once setup

Bug

But, forget the US as very unreliable

Bug

Update April 2016 in Beijing and Shanghai

Bug

It worked well for phone calls to North America but couldn't call numbers in China

Bug

But, I didn't receive any calls so wonder if it worked at all

Bug

It worked reasonably well for data, only loosing connection occasionally

Bug

Rates are expensive in China!

Bug

Update May 2026 in Amsterdam

Bug

Data works so infrequently you may as well forget it

Bug

I would like to know why data doesn't work so often

Bug

Isn't there something that an be done?

Bug

No way to disable KnowRoaming is a deal breaker for me

Bug

With cheap data roaming in EU these days I want to be able to disable the automatic switching

Bug

Purchasing and installing the product on my unlocked iPhone was quite simple and took just a few minutes

Bug

My first trip was in the US and didn't work quite as seamlessly as it should

Bug

The Reachme function required some tech intervention but KnowRoaming were very responsive and solved the problem

Bug

My only complaint is that texting with the US number is not yet supported

Bug

Get that fixed and 5 stars....

Bug

Used for voice and data coverage in Croatia and Italy

Bug

Data worked well in both countries

Bug

Voice worked sometimes

Bug

Two Issues:

Bug

1. Had experienced issues making calls within Italy .. data worked, I was able to make a single call from Italy to Croatia but next day I wasn't able to make simple local calls within Italy

Bug

Kept getting a message along the lines “This call can not be completed while the call baring service is in place”

Bug

2. Voice provider in Italy was Orange Israel, this company was subject to many controversies and I would had thought twice about choosing Know Roaming if I knew it

Bug

It will also make parts of your iPhone setting menu appear in Hebrew, but for this part is not really a problem

Bug

Just keep the phone upside down and keep reading left to right :) - ok that is a joke, but only few menu items were affected did not prevent me from using the phone

Bug

Needs to be updated to support the new iPhones resolutions

Bug

Works well if you follow the instructions

Bug

The app guides you through what needs to be done when arriving abroad and returning home

Bug

Only negative for me is that this is a Canadian company and charging in USD

Bug

There is no telephone contact number anywhere to be find if you need to contact the supporting team, very frustrating to get help

Bug

System alway over ride the Wi-Fi, so you need to continues to use the paid system

Bug

Does not give the user the flexibility to cancel or remove from the system

Bug

It may sound cheaper for telecommunication needs but actually it cost more when the KnowRoaming system override the free Wi-Fi

Bug

I would give it a 0 from worst to excellent

Bug

I've just returned from my first trip with KnowRaoming installed

Bug

The overall performance and economy of the system was excellent

Bug

I had two minor issues: an APN problem associated with my recent upgrade to iOS 9 and a displayed call charge error (actual charges and balance were correct)

Bug

My e-mail requests for support received immediate responses with full, timely (and simple) solutions to my issues

Bug

The KnowRoaming system works very well for me and is the best available solution to my multi-national travel patterns

Bug

Crashes on IOS 7.0.6

Bug

I'm trying use this app and the sticker For long time ..

Bug

Both them services is not work

Bug

Rich me ... All this forward call

Bug

Not work , you can't get phone

Bug

Call maybe ring , but try to Answer :(

Bug

The Internet is very slow and not Really relabel ...

Bug

Now I'm waiting for refund .. On top up I have done on my account ...

Bug

Good idea , but that's it

Bug

This system has a great deal of potential, and when it works it's excellent

Bug

That said, here are the downsides I've seen:

Bug

1) Occasionally, especially when moving from country to country, you need to delete the app, and all the profiles associated with service, and manually switch to your home SIM in order to re-establish connectivity with your home SIM, or even WIFI

Bug

This has happened to me a few times

Bug

You must delete the profiles otherwise you might connect to Home Network or WIFI but data will not work

Bug

2) Voice quality is usually poor and in the top end passable but never excellent

Bug

3) You cannot tether or use personal hot spot functions, meaning you can't take advantage of the service as a modem for your tablet or notebook

Bug

I can understand that they want to limit data usage but should at least allow this through direct tether

Bug

4) As others have mentioned this is not a service for non-technical people

Bug

It has challenged me (mobile data professional) and I would consider myself an advanced user

Bug

So, if you are not tech savvy give this one a miss for now

Bug

The savings you get from using the service are excellent

Bug

When it works, it works well

Bug

I am eager to see a more polished solution

Bug

If the kinks are ironed out I'd definitely consider using it on a permanent basis

Bug

I’ve saved a fortune on my roaming

Bug

But not because of Knowroaming but because I ended up with No Roaming, and no service from Knowroaming

Bug

The need for this is clear, but don’t confuse the need with a solution - Knowroaming is pre pre beta still and Apple should not allow this app on its platform

Bug

KnowRoaming has saved me a bundle when travelling, especially to multiple countries or for short trips

Bug

My only request would be to update the app to scale properly on iPhone 6/6+

Bug

I give this a 3/5 only because the ideals great but they charge USD to fellow Canadians as well, also as we all know the USD is currently higher then the CAD

Bug

Still a huge saving if your going abroad but still wrong to charge Canadians USD

Bug

Useless!!

Bug

Cumbersome to get going and even worse on performance

Bug

Had to manually peel of sticker on sim to get back in contact

Bug

Do not use!!!

Bug

I have been waiting for something like this to come out for ages

Bug

I'm so happy that I can finally roam freely and affordably

Bug

I have T-Mobile in the USA and I purchased this specifically to use domestically when I travel in areas T-Mobile doesn't have coverage

Bug

The data is $8 a day for unlimited, that's a great deal!

Bug

Stay connected while traveling with calling, data and texts

Bug

Much simpler and more convenient than sim swopping on arrival

Bug

Contactable on your home numbers with the ability to buy additional numbers in countries that you travel

Bug

You can also monitor your usage of your calls/data in real time

Bug

Saving a fortune on roaming costs!

Bug

I'm not sure why this app was launched if there isn't SIM stickers available

Bug

Without one you can't register

Bug

Requested Features

13 requests

Add total usage display

Feature

Support for older phones

Feature

Update for iPhone X resolutions

Feature

Add SMS and text message reception in app

Feature

Add dark mode option

Feature

Add advanced analytics dashboard

Feature

Allow disabling service easily

Feature

Improve app UI for older phones

Feature

Add phone contact number for support

Feature

Allow tethering/personal hotspot

Feature

Improve voice quality

Feature

Add support for texting with US number

Feature

Update app to scale on iPhone 6/6+

Feature

FAQ

What is an eSIM and how does it work?

An eSIM is a digital SIM card built into your device, allowing you to activate a cellular plan without a physical card. The app lets you purchase and install an eSIM plan for your destination. Once installed, you activate it upon arrival to get connected.

How do I install and activate an eSIM?

After purchasing a plan in the app, you'll receive a QR code to scan for installation. Activation is simple: just turn on your eSIM and set roaming to 'on' when you reach your destination country or region.

What devices are compatible with eSIMs?

Most newer smartphones and tablets support eSIM technology. You can find a comprehensive list of compatible devices on the KnowRoaming website by following the provided link.

How much does it cost to use KnowRoaming eSIMs?

The app offers affordable data plans for over 200 countries and regions. Pricing varies by destination and data allowance. You can view specific plan costs within the app before purchasing.

What if I run out of data or need help?

The app provides low balance alerts to help you manage your data usage. You can easily top up your plan directly through the app. 24/7 support is also available if you encounter any issues.