SIMPlus

SIMPlus

Seamless Multi-Number Travel

162 ratings
352 reviews
Free
In-App Purchases

Details

Released
July 5, 2016
Updated
October 30, 2026

Features

Background Location Access

SIMPlus screenshot #1 for iPhone
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SIMPlus screenshot #7 for iPhone
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SIMPlus screenshot #9 for iPhone
iphone
iphoneDuo
ipad
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About

This app transforms your iPhone into a dual SIM device, enabling mobile phone functionality on your iPad and iPod. It also offers VoIP-PSTN calling when a BLE device isn't connected.

✓Dual SIM functionality on iPhone
✓Mobile functionality for iPad and iPod
✓VoIP-PSTN calling
✓BLE device integration
✓Call recording
✓International travel savings
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What users say about SIMPlus

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+1

What's New in SIMPlus

4.6.2

October 30, 2026

Improved support for iPhone Duo and iPad, with smoother split-screen browsing. Even the on-screen notices have found their place!

10

Subscriptions & In-App Purchases

$7.99

100 minutes voice call

Voice call to any phone in mainland China only.

User reviews

Bugs

It's working well but when someone call me after answering talking when I turn off the call it's a mission call in logs
When I try to send messages in Persian the text will send in Chinese and receiver can't understand the text
Some times when someone called i answer but the screen just show the answer and reject buttons and I couldn't put the call on speaker
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USSD Not Working in SimPlus App

Dear Customer Support Team,

I am facing an issue with USSD codes in both the IKOS and SIMPlus apps.

USSD codes do not work properly in either app. Whenever I enter a USSD code (for example, *699#), instead of opening the USSD menu and showing the available options, it redirects to the calling screen / does not provide any USSD response.

This is inconvenient because some mobile network services and packages can only be activated or managed through USSD codes.

Could you please confirm:

1. Is USSD supported in the IKOS and SIMPlus apps?
2. If yes, how can I use USSD codes correctly?
3. If USSD is currently not supported, are you planning to add USSD support in a future update?
4. Is there any alternative method to access USSD-only services while using IKOS/SIMPlus?

Please look into this issue and provide a solution.

Thank you.
Best regards,
Abdullah
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Reception Issue

Cellular/reception not working properly, need to check every hour for reception

!!!

数字拨号键盘的声音太小了,还有app的ui图标可以多做点更好看的

Plz add icoonect device working on this app

Plz new feature for adding Iconnect device working on this app

Developer apps

User experience

🐞

Reported Bugs

20 issues

Call audio not working or distorted

Bug

Device disconnects automatically after 1-2 minutes

Bug

Bluetooth connection drops during calls

Bug

Microphone not working with Bluetooth devices

Bug

Network settings revert after saving

Bug

SMS messages display with Chinese characters

Bug

Incoming calls show as 'unknown' contact

Bug

App crashes on launch

Bug

Connection failed error messages

Bug

Device shows offline status

Bug

Messages not saving after app close

Bug

PIN code not saving

Bug

Confirm button disappears on PIN entry

Bug

Mobile data turns off unexpectedly

Bug

Widget not auto-refreshing

Bug

Time zone display incorrect

Bug

Incoming calls not showing on Apple Watch

Bug

No notification sound when locked

Bug

App hangs with poor internet connection

Bug

Incompatibility with iOS 17/18 updates

Bug
✨

Requested Features

20 requests

USSD code support for balance checks

Feature

Apple Watch app integration

Feature

Dark mode theme

Feature

Conference call functionality

Feature

Call waiting feature

Feature

Automatic OTP copying

Feature

Separate ringtones for different SIMs

Feature

Manual carrier selection option

Feature

Background app operation without location services

Feature

Contact synchronization

Feature

SIM Toolkit (STK) application

Feature

Default iOS dialer integration

Feature

Network type selection (LTE only, etc.)

Feature

Data roaming control options

Feature

Widget auto-refresh

Feature

Phone number display in app

Feature

Scheduled message sending

Feature

Call history from native phone app

Feature

CarPlay support

Feature

IMEI customization

Feature

FAQ

Does SIMPlus have ads?

No, SIMPlus does not contain advertisements. The app is free to download and use, with optional in-app purchases available.

What devices does SIMPlus support?

SIMPlus is designed to work with iPhones, iPads, and iPods. It leverages BLE technology to enhance functionality on these Apple devices.

How often is SIMPlus updated?

SIMPlus receives frequent updates, with the latest version being 4.6.2 released on 2026-10-30. Users have noted frequent app updates as a positive aspect.

What is the user sentiment for SIMPlus?

User sentiment for SIMPlus is mixed. While users appreciate the dual SIM functionality and cost savings, some report issues with call quality, disconnections, and battery consumption.

Can SIMPlus be used offline?

SIMPlus offers integrated VoIP-PSTN calling that functions even when a BLE device is not connected, suggesting some offline calling capabilities.

What are the main drawbacks of SIMPlus?

Key drawbacks mentioned by users include the requirement for the app to stay open in the background, poor call audio quality, frequent disconnections, and high battery consumption.

Is SIMPlus suitable for international travel?

Yes, SIMPlus is useful for international travel, as it helps save money on roaming charges by providing dual SIM functionality and alternative calling methods.

What is the age rating for SIMPlus?

SIMPlus has an age rating of 4+, making it suitable for a wide range of users.