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Though my sim is perfectly working it has been showing no service in my iPhone. Even the service centres couldn’t resolve the issue. What’s wrong?
[Re-Titled by Moderator]
If it’s “working perfectly” … perhaps you need to move to a location with a mobile signal from that SIM’s carrier.
Or perhaps your device is “Carrier Locked” to another carrier.
If so, see:
How to unlock your iPhone for use with a different carrier - Apple Support
Lastly, see this article for other possibilities:
If you can't make or receive calls on your iPhone - Apple Support
If it’s “working perfectly” … perhaps you need to move to a location with a mobile signal from that SIM’s carrier.
Or perhaps your device is “Carrier Locked” to another carrier.
If so, see:
How to unlock your iPhone for use with a different carrier - Apple Support
Lastly, see this article for other possibilities:
If you can't make or receive calls on your iPhone - Apple Support
Though my sim is perfectly working it has been showing no service in my iPhone
