RS-MS1I

RS-MS1I

by ICOM INCORPORATED

74 ratings
64 reviews
Free

Details

  • Released
  • Updated
  • March 31, 2017
  • July 17, 2026

Features

RS-MS1I screenshot #1 for iPhone
RS-MS1I screenshot #2 for iPhone
RS-MS1I screenshot #3 for iPhone
RS-MS1I screenshot #4 for iPhone
RS-MS1I screenshot #5 for iPhone
iphone
ipad
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About

Control compatible transceivers, share voice and pictures, and view station locations on a map. Access received station information, send text messages, and manage call sign and repeater lists. Customize transceiver and application settings for a streamlined experience.

Transceiver DR functions
Send and receive voice and pictures
Map repeater and station locations
Read and edit received station information
Send and receive text messages
Manage call sign and repeater lists
Import/Export data
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What users say

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What's New in RS

1.40

July 17, 2026

- Supported with ID-5200A/E. - Supported the display of 10 GHz band repeaters. - Fixed a bug where the app would crash when displaying the map screen on devices running iOS 26 or iPadOS 26.

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User reviews

Nice basic app

This app has worked well in the past with my ID-52 but lately it has started crashing when I use the map function to see a station location. Annoying

App crashes on map screen

This app works for everything except when on the map screen. The entire application will crash when looking at the map section. Icom needs to fix this.

Almost perfect. App closes when opening the map and moving about. Annoying!

App closes when opening map! Annoying.

Fails with ID-52A Plus on iPhone 16 and iPad Pro

Update, 2025-06-05. Got further along but still not staying connected to the app. I was mistakingly trying to pair using the iPhone’s Settings: Bluetooth: Pair. However; just using the ID-52A Plus’s Bluetooth pairing function and then pair in the RS-MS1Ii app. It says paired but then a notification on the iPhone says not connected. Tried numerous iterations of settings from YouTubers but no luck. This app, as advertised by Icom for the ID-52A Plus, does not work for my iPhone 16 Pro and iPad Pro. This is the major reason I upgraded from ID-51A. Bluetooth is a very mature and well understood technology and so there is no excuse for Icom to not fix this ongoing problem.
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Fails with ID-52A Plus on iPhone 16 and iPad Pro

Error message on iPhone and iPad: “Connection Unsuccesful “ICOM BT(ID-52)” is not supported” Forget Device?” Bluetooth, as advertised by Icom for the ID-52A Plus does not work for my iPhone 16 Pro and iPad Pro. This is the major reason I upgraded from ID-51A. Bluetooth is a very mature and well understood technology and so there is no excuse for this failure to fix their error(s).
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Developer apps

User experience

🐞

Reported Bugs

29 issues

App crashes when using map function

Bug

App crashes on map screen

Bug

App closes when opening map

Bug

Not staying connected to the app

Bug

Connection unsuccessful error message

Bug

Bluetooth pairing not working

Bug

Connects and immediately disconnects

Bug

Does not download full repeater list

Bug

Bluetooth connection fails

Bug

App crashes when selecting a picture to send

Bug

Photo import force closes app

Bug

App bombing out when trying to add a photo

Bug

Attempting to transfer photos crashes every time

Bug

Cannot get app to pair

Bug

App sees radio but won't connect

Bug

App won't connect

Bug

Cannot connect app to iPhone

Bug

ID-52A not pairing

Bug

App instantly sees device but fails to connect

Bug

Bluetooth connection does not happen

Bug

App crashes trying to share photo

Bug

App picture send capability is INOP

Bug

App force closes / crashes on photo import

Bug

Cannot get it to connect on either device

Bug

App doesn't work with ICOM ID-5100

Bug

App doesn't work with 4100 on iOS 15

Bug

App doesn't work with iPhone 6s+

Bug

Bluetooth connection does not happen after lengthy labours

Bug

App has not been updated in almost a year

Bug

Requested Features

12 requests

Add support for ID-5100

Feature

Add support for ID-51A Plus 2

Feature

Add support for ID-50

Feature

Add support for IC-705

Feature

Improve repeater list

Feature

Import repeater lists via Files/OneDrive/Dropbox

Feature

Serial port support via USB

Feature

Add support for ID-4100A with BT module

Feature

Add support for IC-2820

Feature

Update for iOS 15

Feature

Update for iOS 16

Feature

Update for iOS 18

Feature

FAQ

What does the RS-MS1I app do?

The RS-MS1I app allows you to control compatible ICOM transceivers from your mobile device. You can send and receive voice and pictures, view station locations on a map, manage received station information, send text messages, and organize your call sign and repeater lists.

What are the key features of the RS-MS1I app?

Key features include controlling transceiver DR functions, sharing voice and pictures, mapping repeater and station locations, accessing and editing received station data, text messaging, managing call sign and repeater lists, and importing/exporting data.

Is the RS-MS1I app free to use?

Yes, the RS-MS1I application is free to download and use. There are no in-app purchases or advertisements mentioned in the provided description.

What devices are compatible with the RS-MS1I app?

The app requires iOS 12 or later. It is designed to work with specific ICOM transceivers, such as the ID-4100A/E, ID-52A/E, ID-52A PLUS/E PLUS, and IC-705, often requiring an optional Bluetooth unit for connection.

How can I use the RS-MS1I app with my transceiver?

To use the app, you need a supported transceiver and potentially an optional Bluetooth unit. You will also need to configure specific settings on your transceiver, such as enabling 'CI-V Transceive' and setting the 'Serial Port Function' for Bluetooth data.