About deregistering old number
I bought a new sim but I can’t deregister the old number on my iphone.. the old sim isn’t working anymore...
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I bought a new sim but I can’t deregister the old number on my iphone.. the old sim isn’t working anymore...
You need to de-register the old number only if you want to use the old SIM with non-iOS (Android, Windows, Google etc) device.
Deregister iMessage on your iPhone or online - Apple Support
https://support.apple.com/en-us/HT203042
You need to de-register the old number only if you want to use the old SIM with non-iOS (Android, Windows, Google etc) device.
Deregister iMessage on your iPhone or online - Apple Support
https://support.apple.com/en-us/HT203042
About deregistering old number