R-SIM iPhone 4S Unlock Not Working? Full Instructions How-to-Use & Troubleshooting Guide

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UPDATE: If you have an AT&T iPhone 4S, unlock it permanently so that you don’t need to use R-SIM or Gevey! Click here!

UPDATE: Due to serious quality issues with this product, we decided to distribute Gevey Ultra S instead, see it in action here!

This guide will show you how to use R-SIM to unlock your iPhone 4S. If you’ve got everything setup, simply follow the instructions below. Do you need one? Order now from our online store.

First things first – If you’re new to using locked iPhone, when iOS 5.1 is due for release in March, DO NOT UPDATE your iPhone without consulting anyone! You will update the modem firmware (baseband) to 1.5.04 (the version on iOS 5.1 beta 3) and you won’t be able to unlock it! If you see iTunes prompting you that there’s an update, cancel it!

Editor's note: learn more by reading our ebook on starting your own iPhone repair & unlock business

I must admit that the R-SIM interposer unlock for iPhone 4S is far from perfect unlike the ultrasn0w unlock, but it gives iPhone 4S owners the ability to use their iPhone as a phone again. Well, at least until this product becomes more mature or better solutions have been developed.

Ready? See the steps below.

A. Manual Mode – Initiate 112 Mode Manually – Recommended

Before you begin, setup your iPhone 4S with the R-SIM. Turn off your iPhone 4S.

1. Switch on your iPhone 4S.

2. Go to Settings, wait until the phone app turned from light green to solid green.

3. Go to Phone > SIM Applications.

4. Tap on “Country & Operators” then select your appropriate service provider which your iPhone 4S is locked to (default is AT&T). For instance, if yours is locked to AT&T, then choose MODE 1 AT&T.

5. Go back to SIM Application menu by tapping the left arrow on top.

6. Tap on “ENTER 112 Mode.”

7. Wait for the Accept Screen to come up then tap “Accept”. Go to the main menu, wait for 5 seconds then dial 112. Once connected, do not hang up.

8. Slowly eject your SIM card, then push the SIM card back into the iPhone again. Wait for the iPhone to hang up itself or hang up after you see the “no service” on the top left screen.

9. Your iPhone will start searching for the network. If you see “No Service”, continue waiting until your service provider name appears. Done!

Note: If you turn off your iPhone, You would need to do these steps again. Don’t be discouraged, it takes practice and you will soon master it after a few times! How often do you turn off your iPhone anyway?

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B. Automatic Mode – Takes you to the ‘Accept Screen’ Automatically

Note: Best to avoid this mode because I wasn’t able to find how to cancel it.

Before you begin, setup your iPhone 4S with the R-SIM. Turn off your iPhone 4S.

1. Switch on your iPhone 4S.

2. Wait till the phone app turned from light green to solid green.

3. Go to Settings > Phone > SIM Applications.

4. Tap on “Country & Operators” then select your appropriate service provider which your iPhone 4S is locked to (default is AT&T). For instance, if yours is locked to AT&T, then choose MODE 1 AT&T.

5. Go back to the previous screen and select Auto Mode. Turn off your iPhone.

6. Turn on your iPhone. Wait for the Accept Screen to appear then tap “Accept”. Wait for 5 seconds then dial 112. Once connected, do not hang up.

7. Slowly eject your SIM card, then push the SIM card back into the iPhone again. Wait for the iPhone to hang up itself or hang up after you see “no service” on the top left screen.

8. Your iPhone will start searching for the network. If you see “No Service”, continue waiting until your service provider name appears. Done!

Additional Notes

1 . If your iPhone doesn’t show the service provider, you can dial a workable phone number, once connected, wait until the phone hangs up itself.

2. If you cannot find your mobile service provider under “Country & Operators”, you can enter the Country (MCC) and Service Provider (MNC) manually under “Edit Mode”. We will publish a complete list here soon or you can email us for information (customers only).

3. AT&T iPhone 4S will require jailbreaking because the APN settings will not show once unlocked. Once jailbroken with GreenPois0n Absinthe, install “TetherMe” via Cydia. You will have the APN settings back.

4. Keep coming back as I’ll continue to update this tutorial and will post a video very soon.
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Frequently Asked Questions

1. Does this work on Verizon or Sprint iPhone 4S?

Currently it’s not supported.

2. How do I fix the issue of not being able to send or receive SMS when I travel internationally (for China-based users)?

When you move to another country the iPhone still memorizes the previous country code. As a result, you cannot receive or send messages because of the incorrect country code (prefix).

Solution: On your iPhone, go to Settings > Phone > International Assist and turn this off.

Then you can change the language from Chinese to English. Turn off the iPhone then turn it on again. Change the language from English to Chinese. Then make sure International Assist is set to off. Then turn off and turn it on once more.

3. How to fix the “Activation Required” when trying to do the unlocking steps?

Solution 1: After turning on your iPhone and before inserting R-SIM, insert your local GSM SIM card into your iPhone 4S. Wait for a few minutes minutes, then go to Settings > General > About. Once you see your service provider eject the GSM SIM card and begin the unlocking steps (no need to turn off).

Solution 2: Your SIM card might be too old and it’s not supported by this device. Get a replacement or a new SIM card from your mobile service provider.

4. Is there a video of the unlocking steps?

Sure – take a look at this Vietnamese customer’s video

5. More to come!

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Comments & Discussion

  1. when i first install my iphone4s it has hanged/ stuck in language settin it is almost 24 hours i cant go further installation procedure, i cant switch off and on, the sreen display only when i connect my charger.

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