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4G network will not activate

  • November 9, 2025
  • 10 replies
  • 85 views

I have recently swapped my phone but I keep getting ‘not registered on network’ errors when trying to make outbound calls.  Incoming calls appear to be going straight to answerphone.  Also, although not sure if it’s connected, the 4G network will not activate either.  Any ideas?

Best answer by WelshPaul

It’s likely a different firmware variant is installed. Was it originally supplied by another network?

10 replies

Geluk
Silver Contributor
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  • Silver Contributor
  • November 9, 2025

Does 4G show as icon on phone?

Suggest you pursue via ID Chat.


  • Author
  • Active Contributor
  • November 9, 2025

Does 4G show as icon on phone?

Suggest you pursue via ID Chat.

It doesn’t no.  I will try that thanks.


WelshPaul
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  • Platinum 
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  • November 9, 2025

What device are you using?


  • Author
  • Active Contributor
  • November 9, 2025

What device are you using?

Samsung S8 Edge


WelshPaul
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  • November 9, 2025

That’s an old phone and it’s not on the iD Mobile approved device list. 


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  • Active Contributor
  • November 9, 2025

That’s an old phone and it’s not on the iD Mobile approved device list. 

It was working fine on my other Samsung S8 Edge phone that I was using one  - two weeks ago.


WelshPaul
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  • Answer
  • November 9, 2025

It’s likely a different firmware variant is installed. Was it originally supplied by another network?


  • Author
  • Active Contributor
  • January 26, 2026

It’s likely a different firmware variant is installed. Was it originally supplied by another network?

yes it was


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  • iD Mobile Employee
  • January 26, 2026

Hi ​@AlSherren,

 

Could you please confirm the model number of the Samsung Galaxy S8 Edge you are currently using?

The SM-G950F model supports 4G LTE, and it’s possible that the device you’re currently using may be a different variant that does not fully support 4G. This could explain the issue you’re experiencing.

You can check the model number by going to Settings > About phone on your device.

 

-Michael Z


WelshPaul
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  • January 26, 2026

You need to flash the phone with a UK Generic firmware variant.