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  • Done everyhing I could possibly think of. Finally got through to tech support from O2 and now they are blaming Apple.

    Just tried swapping my sim with a friend's who is on Tesco and has 4G signal here:

    My sim in her iPhone 5c - no 4G
    Her sim in my iPhone - no 4G

    I don't understand...

  • Can you access your local O2 cell tower?

    If so try unplugging it then plugging it back in again.

    If not, can you access your local electricity substation?

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