The Poco X3 NFC was a budget king, selling millions of units. Unfortunately, it developed a reputation for issues.
If your phone was reported stolen and you bought it second-hand, an IMEI repair will not unblock it from the carrier blacklist. Only the original owner can remove that block.
Open the suite on your PC and launch Software Download .
We must inject the IMEI manually using a donor QCN file.
To help me tailor any troubleshooting steps, could you tell me: What does your device currently show when you dial ?