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Question

New SIM card in iPhone X not working. No service or data, only showing grey bars. Need help sorting it.

  • August 3, 2026
  • 1 reply
  • 5 views

New SIM card in iPhone X not working. No service or data, only showing grey bars. SIM is activated and works in a different phone, but not the iphone X. My old SIM card with O2 worked fine but I switched to ID.
When I put it in iPhone X, I have tried toggling Airplane mode on and off, resetting network settings in settings and restarting the phone but still no luck. Can anyone help me fix it please?

1 reply

Gemma M
iD Mobile Employee
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  • iD Mobile Employee
  • August 3, 2026

Hi ​@mbyiv1,

 

I'm really sorry to hear you're experiencing issues with your SIM card. Please try the steps below:

 

For iPhone:

  • Go to Settings
  • Tap Phone
  • Tap My Number
  • Delete the old number
  • Enter the new number
  • Tap Save


Then follow these steps to refresh iMessage:

  1.  Go to Settings
  2. Tap Messages
  3. Turn iMessage OFF
  4. Go to Settings > General
  5. Tap Reset
  6. Choose Reset Network Settings
  7. Once your iPhone restarts, go back to Settings
  8. Tap Messages
  9. Turn iMessage ON again


Your iPhone should now recognise the new SIM and verify your number. If this does not work, please get in touch with our customer service team via live chat to request a new SIM card.

 

Regards,

 

Gemma M

The iD Mobile Social Media Team