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SIMPlus

SIMPlus

Seamless Multi-Number Travel

160 ratings
351 reviews
🔧 Utilities
📊 Productivity
Free
In-App Purchases

Details

  • Released
  • Updated
  • July 5, 2016
  • October 5, 2026

Features

Background Location Access

Developer

均 魏
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SIMPlus screenshot #9 for iPhone
🧾$0.99 - $49.99
In-App Purchase↘︎
📌Ready
Reviews summary↘︎
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Tags↘︎
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❓5 answered
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📦~ in 2 weeks
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About

This app enables dual SIM functionality on your iPhone, allowing you to use two numbers simultaneously. It also provides mobile phone capabilities for iPads and iPods, with integrated VoIP-PSTN calling for when Bluetooth devices are not connected.

✓Dual SIM iPhone functionality
✓Mobile functionality for iPad/iPod
✓BLE-enabled connectivity
✓VoIP-PSTN call integration
✓Use two numbers simultaneously
Show original description

What users say about SIMPlus

Reviews of SIMPlus are mixed: the Utilities app is rated 3.6/5 from 160 App Store ratings. What users like most: dual SIM functionality on iPhone, fast call and message delivery. Top complaints: requires app to stay open in background, poor call audio quality and voice issues. Summarized from real user reviews.

Positive things

  • 📱Dual SIM functionality on iPhone
  • 🚀Fast call and message delivery
  • 💰Saves money on roaming charges
  • 🎨Improved UI design in recent updates
  • 📞Call recording feature
  • ⚡Quick customer service response
  • 🔄Frequent app updates
  • 📊Works well with Bluetooth devices
  • 🌍Useful for international travel

Negative things

  • 🔌Requires app to stay open in background
  • 🔊Poor call audio quality and voice issues
  • 📉Frequent disconnections
  • 🐛Multiple connectivity problems
  • 📱Incompatible with some iOS versions
  • 🔋High battery consumption
  • 📨SMS display issues with garbled characters
  • ⚠️Device goes offline unexpectedly
  • 🌐WiFi stability problems
  • 🔐Account login failures after updates
See all reviews

What's New in SIMPlus

4.6.0

October 5, 2026

This update fixes several known issues and improves the app’s stability, performance, and overall user experience.

10

Subscriptions & In-App Purchases

$7.99

100 minutes voice call

Voice call to any phone in mainland China only.

User reviews

Most RecentHighest RatedLowest Rated

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
Show more
mabdullah4umabdullah4u

Reception Issue

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

！！！

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
雪丽！雪丽！

Plz add icoonect device working on this app

Plz new feature for adding Iconnect device working on this app
Dr kifiDr kifi

firmware upgrade

please do somthing about firmware upgrade for k6 devices and iran network compatibility + ios27 better support zero with zero faild and...
pouriahectorpouriahector
See 346 more reviews

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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

What does SIMPlus do?

SIMPlus transforms your iPhone into a dual SIM phone, enabling you to use two phone numbers at once. It also extends mobile phone functionality to your iPad and iPod devices. The app integrates VoIP-PSTN calling for added convenience.

How does SIMPlus enable dual SIM functionality?

The app utilizes BLE (Bluetooth Low Energy) technology to connect with your iPhone, effectively turning it into a dual SIM device. This allows you to manage and use two separate phone numbers seamlessly.

Can I make calls without a BLE device connected?

Yes, SIMPlus offers integrated VoIP-PSTN calling. This means you can still make and receive calls even when a BLE device is not connected, ensuring continuous communication.

What devices are compatible with SIMPlus?

SIMPlus is designed for iPhones, iPads, and iPods. It provides dual SIM capabilities for iPhones and adds mobile phone functionality to iPads and iPods.

Is SIMPlus free to use?

The app is free to download and use, with in-app purchases available. These purchases likely unlock additional features or services beyond the basic functionality.