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o2 sim not working in unlocked iphone 12 mini

Dannihilli
Level 1: Joiner
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I am tearing my hair out. I have set this phone up from an icloud backup of my old iphone x  BUT it won’t connect to the o2 cellular network. The SIM works fine in my old phone and when i recently upgraded it I ticked the 5G ready box.

When I go to settings/general/about/network I get a message saying ‘not available’ and when I click on this it says ‘phone not allowed’

Has anyone else had this problem and know how to resolve it. All help gratefully received.

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MI5
Level 94: Supreme
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@Dannihilli 

The phone would appear to be blocked.

If it came from O2 you need to call them to lift the block from the phone.

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone 8+ (EE)

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MI5
Level 94: Supreme
  • 120705 Posts
  • 605 Topics
  • 18176 Solutions
Registered:

@Dannihilli 

The phone would appear to be blocked.

If it came from O2 you need to call them to lift the block from the phone.

I have no affiliation whatsoever with O2 or any subsidiary companies. Comments posted are entirely of my own opinion. This is not Customer Service so we are unable to help with account specific issues.

Currently using:
OnePlus 6 (O2 & Sfr), Z3 Tablet (Three UK), iPhone 8+ (EE)

View solution in original post

Message 2 of 2
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