---
title: "RS-MS1I - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "Functional overview of the application DR functions You can use some transceiver’s DR functions.  Share pictures Send and receive voice and pictures.  Map See the location of repeater sites or other s"
---

# RS-MS1I — United States

![RS-MS1I App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/b2/b8/94/b2b89472-2e78-4163-4fdc-22d43bcecd26/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/434x0w.png)

**Developer:** [ICOM](https://apptail.io/developer/icom-Inyb) (Japan)
**Category:** Utilities
**Rating:** 1.9/5 (75 ratings)
**Price:** Free
**Bundle ID:** RSMS1I
**Store:** Apple App Store
**Country:** United States
**Version:** 1.40  (released 2026-07-17)
**Original Release:** 2017-03-31
**Languages:** English, Japanese

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id1193842632)
**AppTail Page:** [https://apptail.io/app/rs-ms1i-sJee/united-states](https://apptail.io/app/rs-ms1i-sJee/united-states)

## RS-MS1I Description
Functional overview of the application
DR functions
You can use some transceiver’s DR functions.

Share pictures
Send and receive voice and pictures.

Map
See the location of repeater sites or other stations on a map using received position data, or your transceiver’s repeater list.
Automatically set the transceiver’s “FROM” and “TO” fields by tapping a repeater site or a station on the map.

Receive History
In the DV mode, read and edit the received station’s information.
Download additional information from an Internet database, such as QRZ.com or APRS.fi.

Text messaging
Send and receive text messages.

Call Sign list
Edit call signs and names used in the DR function. Also, you can add a call sign and a name in the Call Sign list.

Repeater list
See the detailed data entered in the Repeater list.

Transceiver settings
Change some of the transceiver’s function settings.

Application settings
Select application software settings.

Import
Import a Repeater list or a Call Sign list.

Export
Export a Repeater list, a Call Sign list, or Receive History.

See the transceiver’s instruction manual for details. The instruction manual can be downloaded from the ICOM web site.

Device requirements
The RS-MS1I operating requirements are as follows:
iOS16 or later

Usable transceivers (As of May 2026)
- ID-4100A/E + Bluetooth unit (UT-137)
- ID-52A or ID-52E *1
- ID-52A PLUS or ID-52E PLUS *2
- ID-5200A or ID-5200E *3
- IC-705 *4

*1 Supported in RS-MS1I Ver.1.1.0 or later.
*2 Supported in RS-MS1I Ver.1.3.0 or later.
*3 Supported in RS-MS1I Ver.1.4.0 or later.
*4 Supported in RS-MS1I Ver.1.2.0 or later.

Preparation
To use the RS-MS1I with a supported transceiver, you need an optional Bluetooth unit. See your transceiver’s instruction manual for details.

Transceiver’s settings
Set the following functions as shown below to use the RS-MS1I.
[Function] > [CI-V] > [CI-V Transceive]: ON
[Bluetooth Set] > [Data Device Set] > [Serial Port Function]: CI-V (Echo back OFF)

Note:
- The RS-MS1I may not work with all iPhones or iPads, even if they are one of the tested devices. This is because an application program on your device may conflict with the RS-MS1I.
- The RS-MS1I may not be used, depending on the OS version, installed application, and so on.
- Bluetooth LE is used for the connection with the transceiver, so there may be a time delay between the transceiver’s operation and the display on the iPhone or iPad.
- When sending or receiving pictures using “FAST mode,” the headset audio will be temporarily interrupted because of the transceiver’s Bluetooth unit limitations.
- You may need to connect to the Internet through a Wireless LAN, an LTE network or a 5G network for some functions.
- The RS-MS1I supports only portrait orientation with the iPhone. It does not support Auto Rotate. However, landscape orientation and Auto Rotate are supported with the iPad.

## RS-MS1I Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/d5/9c/f0/d59cf0b3-b469-cb21-72d1-15263c4aebfc/15295b9d-f709-4bcb-85cb-ac132a2be5e8_ENG_00.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/31/59/1d/31591dc4-b80e-bbf8-43dc-b335c38fbc65/80528a90-0e30-4c07-b577-9c9ea89804ca_ENG_01.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/e8/68/f2/e868f229-2215-0875-5d55-af9d848012a0/38f6ac17-fefc-4d16-825a-5d8244822443_ENG_02.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/44/dc/32/44dc3220-0a4a-218c-c193-19be9ba9c869/645fce61-baca-4cb4-b66a-0474730e86d9_ENG_03.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource125/v4/ed/de/b0/eddeb007-3f71-eb7e-174f-c77e72159c01/c1332374-57bd-4bcb-a941-adf3f7513cfb_ENG_04.png/1242x2688.png)

## RS-MS1I Rating Breakdown in United States
- 5 stars: 11 (15%)
- 4 stars: 3 (4%)
- 3 stars: 6 (8%)
- 2 stars: 3 (4%)
- 1 stars: 52 (69%)

## RS-MS1I Reviews in United States

### *---- "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.
-- davidr42, 2025-06-05

### *---- "Not for ID-50"
It would not have been difficult to make this app function with a USB connection to an iPhone, but it is Bluetooth only, so it’s not compatible with the ID-50
-- Queen Runner Bean, 2025-05-26

### *---- "iOS 18 does not work"
ID-52 and does not stay connected to iPhone 15 Pro on iOS 18
-- Johndball.com, 2025-02-23

### ***** "Once again quick fix from the Icom Devs"
I reported a connection bug a few weeks ago and the excellent devs from Icom knocked this out quickly. Thank you!  Once again, I am an Icom user for life. Their support is second to none!
-- majorgearhead, 2024-12-20

### *---- "Useless"
I bought the icon ID 52 plus completely unusable to program and now I’m out like 800 bucks wish I would’ve went with another brand. The only thing I can get the radio to do is whether an FM radio.
-- TexasPatriot1, 2024-11-17

### *---- "Don’t bother- doesn’t work"
Clearly they no longer support this app. Bluetooth implementation no longer works. Android app works. Try that.
-- JonStirling, 2024-11-01

### ***** "Works fine"
The app works great for me.  Connected to my 705 even from another room.
-- Genesis_Fides, 2024-09-21

### *---- "IS-52 and iPhone 13 won't connect"
The app is worthless. Cannot connect to iPhone 13 Pro Max. Tried two phones. Pairs and connects, then drops the connection. Too bad. Gave up.
-- Bewildered15, 2024-08-21

### *---- "ID-52"
Connects and immediately disconnects from iPhone 14 with most current iOS. such a frustrating waste of time. The app looks useful, but cannot get it to connect to the radio for more than two seconds.
-- Go US Army!, 2024-05-24

### *---- "Doesn’t work"
I was really looking forward to this having just got the ID-52a and I thought, for sure being that Icom has such a large presence here in the US for amateur radio that they would surely have an iOS app that would work well with their flagship HT being that the vast majority of people in the US use iPhones. Unfortunately, the app is completely unusable because the very first step of connecting through Bluetooth doesn’t work. It’s able to find the radio but it’s not able to connect the radio and phone. I have, of course, tried every possible solution and nothing works. A real disappointment, considering the manufacturers name.
-- Millbean, 2024-01-06

[View all RS-MS1I reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)



## RS-MS1I Discovered Keywords
- rs-ms1i

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## RS-MS1I Available In
- [United States](https://apptail.io/app/rs-ms1i-sJee/united-states)
- [Japan](https://apptail.io/app/rs-ms1i-sJee/japan)
- [United Kingdom](https://apptail.io/app/rs-ms1i-sJee/united-kingdom)
- [Germany](https://apptail.io/app/rs-ms1i-sJee/germany)
- [France](https://apptail.io/app/rs-ms1i-sJee/france)
- [China](https://apptail.io/app/rs-ms1i-sJee/china)
- [Australia](https://apptail.io/app/rs-ms1i-sJee/australia)
- [Italy](https://apptail.io/app/rs-ms1i-sJee/italy)
- [Canada](https://apptail.io/app/rs-ms1i-sJee/canada)
- [Switzerland](https://apptail.io/app/rs-ms1i-sJee/switzerland)
- [Israel](https://apptail.io/app/rs-ms1i-sJee/israel)
- [Austria](https://apptail.io/app/rs-ms1i-sJee/austria)
- [Russia](https://apptail.io/app/rs-ms1i-sJee/russia)
- [Brazil](https://apptail.io/app/rs-ms1i-sJee/brazil)
- [Spain](https://apptail.io/app/rs-ms1i-sJee/spain)
- [United Arab Emirates](https://apptail.io/app/rs-ms1i-sJee/united-arab-emirates)
- [South Korea](https://apptail.io/app/rs-ms1i-sJee/south-korea)
- [Philippines](https://apptail.io/app/rs-ms1i-sJee/philippines)
- [Portugal](https://apptail.io/app/rs-ms1i-sJee/portugal)
- [Denmark](https://apptail.io/app/rs-ms1i-sJee/denmark)
- [Ireland](https://apptail.io/app/rs-ms1i-sJee/ireland)
- [Netherlands](https://apptail.io/app/rs-ms1i-sJee/netherlands)
- [Taiwan](https://apptail.io/app/rs-ms1i-sJee/taiwan)
- [Ukraine](https://apptail.io/app/rs-ms1i-sJee/ukraine)
- [Kazakhstan](https://apptail.io/app/rs-ms1i-sJee/kazakhstan)
- [Lebanon](https://apptail.io/app/rs-ms1i-sJee/lebanon)
- [Sri Lanka](https://apptail.io/app/rs-ms1i-sJee/sri-lanka)
- [Lithuania](https://apptail.io/app/rs-ms1i-sJee/lithuania)
- [Luxembourg](https://apptail.io/app/rs-ms1i-sJee/luxembourg)
- [Madagascar](https://apptail.io/app/rs-ms1i-sJee/madagascar)
- [Mexico](https://apptail.io/app/rs-ms1i-sJee/mexico)
- [Malaysia](https://apptail.io/app/rs-ms1i-sJee/malaysia)
- [Nigeria](https://apptail.io/app/rs-ms1i-sJee/nigeria)
- [Norway](https://apptail.io/app/rs-ms1i-sJee/norway)
- [Nepal](https://apptail.io/app/rs-ms1i-sJee/nepal)
- [New Zealand](https://apptail.io/app/rs-ms1i-sJee/new-zealand)
- [Oman](https://apptail.io/app/rs-ms1i-sJee/oman)
- [Panama](https://apptail.io/app/rs-ms1i-sJee/panama)
- [Peru](https://apptail.io/app/rs-ms1i-sJee/peru)
- [Pakistan](https://apptail.io/app/rs-ms1i-sJee/pakistan)
- [Poland](https://apptail.io/app/rs-ms1i-sJee/poland)
- [Qatar](https://apptail.io/app/rs-ms1i-sJee/qatar)
- [Romania](https://apptail.io/app/rs-ms1i-sJee/romania)
- [Saudi Arabia](https://apptail.io/app/rs-ms1i-sJee/saudi-arabia)
- [Sweden](https://apptail.io/app/rs-ms1i-sJee/sweden)
- [Singapore](https://apptail.io/app/rs-ms1i-sJee/singapore)
- [Slovenia](https://apptail.io/app/rs-ms1i-sJee/slovenia)
- [Slovakia](https://apptail.io/app/rs-ms1i-sJee/slovakia)
- [Thailand](https://apptail.io/app/rs-ms1i-sJee/thailand)
- [Tunisia](https://apptail.io/app/rs-ms1i-sJee/tunisia)
- [Türkiye](https://apptail.io/app/rs-ms1i-sJee/turkey)
- [Uruguay](https://apptail.io/app/rs-ms1i-sJee/uruguay)
- [Vietnam](https://apptail.io/app/rs-ms1i-sJee/vietnam)
- [South Africa](https://apptail.io/app/rs-ms1i-sJee/south-africa)
- [Armenia](https://apptail.io/app/rs-ms1i-sJee/armenia)
- [Argentina](https://apptail.io/app/rs-ms1i-sJee/argentina)
- [Azerbaijan](https://apptail.io/app/rs-ms1i-sJee/azerbaijan)
- [Belgium](https://apptail.io/app/rs-ms1i-sJee/belgium)
- [Bulgaria](https://apptail.io/app/rs-ms1i-sJee/bulgaria)
- [Brunei](https://apptail.io/app/rs-ms1i-sJee/brunei)
- [Belarus](https://apptail.io/app/rs-ms1i-sJee/belarus)
- [Chile](https://apptail.io/app/rs-ms1i-sJee/chile)
- [Colombia](https://apptail.io/app/rs-ms1i-sJee/colombia)
- [Czechia](https://apptail.io/app/rs-ms1i-sJee/czechia)
- [Dominican Republic](https://apptail.io/app/rs-ms1i-sJee/dominican-republic)
- [Algeria](https://apptail.io/app/rs-ms1i-sJee/algeria)
- [Ecuador](https://apptail.io/app/rs-ms1i-sJee/ecuador)
- [Estonia](https://apptail.io/app/rs-ms1i-sJee/estonia)
- [Egypt](https://apptail.io/app/rs-ms1i-sJee/egypt)
- [Finland](https://apptail.io/app/rs-ms1i-sJee/finland)
- [Greece](https://apptail.io/app/rs-ms1i-sJee/greece)
- [Hong Kong SAR China](https://apptail.io/app/rs-ms1i-sJee/hong-kong)
- [Hungary](https://apptail.io/app/rs-ms1i-sJee/hungary)
- [Indonesia](https://apptail.io/app/rs-ms1i-sJee/indonesia)
- [India](https://apptail.io/app/rs-ms1i-sJee/india)
- [Iceland](https://apptail.io/app/rs-ms1i-sJee/iceland)
- [Kuwait](https://apptail.io/app/rs-ms1i-sJee/kuwait)

---

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