I simply switched my IDMobile sim card from my iPhone 12 to a new iPhone16 pro. After 3 days I’m still getting activation error on iMessage, and only my 2 email addresses are registering on there. I’ve tried every Apple suggestion - even been through the chat support - they say the problem is with iD Mobile. Went through iD Mobile’s suggestions from their help section, but getting the exact same error. No idea what to do next - any help appreciated.
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iMessage activation error
Best answer by gashton34
Thanks. I tried that but same issue. Anyway, following 3 ful days and many hours messing with it and going through support for the carrier and Apple, the result was that the SIM card was found to be faulty. A new eSIM solved it instantly.
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