How to Fix IMS Registration Not Registered?

June 11, 2023 0 By tech

To fix the IMS Registration Status “Not Registered”, you can start by performing an SCRTN reset by dialing ##72786# on your device. If that doesn’t work, try removing and re-inserting your SIM card. You should also check that your device is set to the correct network mode and that your radio signal is turned on. Restarting your device or toggling airplane mode on and off can sometimes resolve this issue. Ensure your operating system is up-to-date, and if necessary, activate your radio and turn on IMS over SMS. Adjust your preferred network type and reset your APN settings if needed.

What’s IMS Registration and Why Is It Needed?

IMS (IP Multimedia Subsystem) Registration is a crucial process that allows your mobile device, such as an iPhone, Samsung Galaxy, or Google Pixel, to access IP multimedia services. It’s a standardized procedure that involves your device sending a SIP (Session Initiation Protocol) REGISTER request to the network, which then authenticates and authorizes the request, allowing your device to use services like VoLTE (Voice over LTE), VoWiFi (Voice over WiFi), and RCS (Rich Communication Services).

The need for IMS Registration arises from the shift in telecommunication networks towards IP-based services. Traditional voice calls and SMS are circuit-switched, meaning they establish a dedicated channel for the duration of the call or message. However, services like VoLTE and VoWiFi are packet-switched, meaning they break down data (voice) into packets and send them individually, allowing for more efficient use of network resources and better quality of service. This is where IMS comes in, providing the framework for these IP-based services to function.

When your IMS Registration Status is “Registered”, it means everything is working correctly. You can make calls, send messages, and use data. But if your status is “Not Registered”, you might have trouble doing these things.

How to Enable Volte

Enabling VoLTE (Voice over LTE) on your smartphone can vary slightly depending on the device and the operating system. Here are the general steps for Android and iOS devices:

For Android:

  1. Open the Settings app on your device.
  2. Scroll down and tap on ‘Network & Internet’ or ‘Connections’ (the wording may vary depending on your device).
  3. Tap on ‘Mobile Network’.
  4. Look for ‘VoLTE’ or ‘Voice over LTE’. On some devices, it might be listed as ‘Enhanced 4G LTE Mode’ or something similar.
  5. Toggle the switch to turn it on.

For iOS (iPhone):

  1. Open the Settings app on your iPhone.
  2. Tap on ‘Cellular’.
  3. Tap on ‘Cellular Data Options’.
  4. Tap on ‘Enable LTE’.
  5. If your carrier supports VoLTE, you’ll see an option for ‘Voice & Data’. Tap on it to enable VoLTE.

Please note that VoLTE availability is subject to your network carrier’s support. If you don’t see these options, it’s possible that your carrier doesn’t support VoLTE, or your device isn’t compatible with VoLTE on your carrier’s network. If you’re unsure, it’s best to contact your network provider for more information.

Why is your IMS Registration Status “Not Registered”?

Your device is “Not Registered” which can prevent you from using important services on your phone.

Possible Reasons for “Not Registered” Status

There are several reasons why your IMS Registration Status might be “Not Registered”. Here are some of the most common:

  1. Your device is not connected to the internet. IMS services need an internet connection to work. If you’re not connected, your device can’t register with IMS.
  2. There’s a problem with your network provider. Sometimes, your network provider might be having issues that prevent your device from registering.
  3. Your device settings are incorrect. Certain settings on your device need to be correct for IMS registration. If they’re not, you could see a “Not Registered” status.
  4. Your SIM card is not activated or is faulty. A problem with your SIM card can also lead to registration issues.
  5. SIM card isn’t connected properly. This issue happens when the SIM card isn’t properly inserted into your device. The device cannot communicate with your carrier’s network, hence the IMS Registration Status can be “Not Registered”.
  6. Incorrect network settings. Your device needs the correct settings in order to connect to your network. This includes your Access Point Name (APN) settings, network mode, and preferred network type. If these settings are incorrect, your device might fail to register on the network.
  7. Outdated phone software. If your device’s software is outdated, it may not be compatible with the current network standards. Software updates often include fixes for connectivity issues, so an outdated software version could cause the IMS Registration Status to be “Not Registered”.
  8. Network carrier not selected. Your device needs to know which carrier to connect to. If your carrier isn’t selected in the network settings of your device, or if the selection is set to “Automatic” but it’s unable to detect the correct network, the device won’t connect to the network and the IMS Registration Status will show as “Not Registered”.
  9. Disconnected or damaged SIM card. If the SIM card is damaged or if its contact with the device is disrupted, the device won’t be able to connect to the network. This could cause the IMS Registration Status to be “Not Registered”.
  10. Your SIM card or local area doesn’t support 5G. If your SIM card or your local area does not support 5G but your device is trying to connect to a 5G network, your device might not be able to connect to the network. In this case, the IMS Registration Status might show as “Not Registered”.

Important Note: These are only possible reasons. There might be other issues causing your “Not Registered” status. If you’re unsure, it’s always a good idea to contact your network provider.

How to Fix IMS Registration Status “Not Registered”?

If your IMS Registration Status is “Not Registered,” don’t panic! Here are some methods you can try to fix it:

Here is a step-by-step guide on how to fix the IMS registration status “Not Registered”.

Perform SCRTN Reset

SCRTN stands for Special Code To Reset the Network. It will reset the network settings of your device.

  • Dial ##72786# on your phone.
  • Your phone will prompt you for a confirmation to reset, confirm it.
  • Your device will reboot and it might take a few minutes to complete the process.

Remove and Re-Insert SIM Card

  • Switch off your phone.
  • Remove the SIM card and clean it gently using a soft cloth.
  • Re-insert the SIM card and switch on your phone.

Check for the Proper Network Mode

  • Go to “Settings” > “Connections” > “Mobile networks”.
  • Tap on “Network mode” and ensure it is set to the one recommended by your carrier (usually, LTE/3G/2G (auto connect)).

Turn on Radio Signal (Samsung)

  • Dial *#*#4636#*#* on your phone.
  • Tap on “Phone information”.
  • Press the “Turn on radio” button.

Restart Your Device

Simply hold the power button for a few seconds and select “Restart” or “Power off”. If you chose “Power off”, wait a few seconds and then power your device back on.

Turn ON/OFF Airplane Mode

  • Swipe down from the top of your screen to open the notification panel.
  • Tap on “Airplane Mode” to turn it on.
  • Wait for a few seconds and then turn it off again.

Update Your Operating System

  • Go to “Settings” > “System” > “System updates”.
  • Tap on “Check for updates” and follow the prompts if any update is available.

Activate the Radio and Turn On IMS over SMS

This process may vary depending on your device. In some cases, it may require advanced technical skills and is typically performed by a service provider.

Change Your Preferred Network Type

  • Go to “Settings” > “Network & internet” > “Mobile network”.
  • Tap on “Preferred network type” and select the one recommended by your carrier.

Reset Your APN Settings

  • Go to “Settings” > “Network & internet” > “Mobile network” > “Advanced” > “Access point names”.
  • Tap on the three dots at the top-right and select “Reset to default”.

Try Another SIM Card

If the problem persists, try to insert another SIM card into your phone. If the new SIM card works, then the problem might be with your original SIM card and not the device.

Contact Your Mobile Network Provider

If none of the above steps work, it’s time to contact your mobile network provider. There might be an issue on their end that they need to fix.

How to Check IMS Registration Status on Android

To check the IMS Registration Status on your Android device, you can use a hidden menu in the phone’s dialer. Here are the steps:

  1. Open the Phone app on your Android device.
  2. Dial *#*#4636#*#*. This will open a hidden menu.
  3. In this menu, select ‘Phone Information’.
  4. Scroll down until you find ‘IMS Service Status’. Here, you can see whether your IMS is registered or not.

Please note that this method may not work on all Android devices as some manufacturers disable or hide this menu.