Raivo

Have you paid your bill?

It's working in  the another phone 

What make and model is the other phone?

Any phones but in the my doesn't work 

What is the make and model of the phone the SIM doesn’t work in. 

Xiaomi 14 ultra 

Hey there ​@Moskvich412, as kindly advised by ​@MZone, your phone doesn’t appear to be listed as approved by us I’m afraid.

This is due to the 3G turn off that began rolling out recently. You can check if this is the case in your area below:

https://www.three.co.uk/support/network-and-coverage/coverage

Please read more below on what this is, and what to do:

https://community.idmobile.co.uk/3g-200/3g-is-being-switched-off-what-do-i-need-to-do-50979

If you have one of the phones from the below list, then 4G VOLTE and Wi-Fi calling should be able to be selected and work, and calls should still work:

https://community.idmobile.co.uk/help-with-your-phone-206/what-phone-are-compatible-with-the-id-mobile-network-67490

If you have a phone that isn’t on this list, then it may or may not work, but we don’t officially support any phones outside of these and cannot say for sure if it will or not.

If the issue persists after following the troubleshooting above and confirming if your phone is approved, then please let us know here so we can investigate further. If your phone isn't listed above, you'll need to upgrade/get a new phone I'm afraid to receive calls. Texts and data should continue to work either way.

Thanks,

Tyler