MediaTek chipsets are notorious for having a volatile NVRAM (Non-Volatile Random Access Memory) partition. Unlike Qualcomm devices, which store IMEI in a secure, hard-to-corrupt location, MTK devices store IMEI data in the NVRAM folder.
Repairing or restoring the IMEI on MediaTek (MTK) devices without a hardware box is possible using various software-based methods. These range from simple "Engineering Mode" commands on the device to more advanced PC tools that interface with the phone's system. Common MTK IMEI Repair Methods (No Box Required) mtk imei repair tool without box
When a phone is reported stolen, carriers blacklist its IMEI, preventing it from connecting to networks. By rewriting the IMEI, a thief can bypass this security measure, often replacing the original IMEI with that of a different phone. Because of this, IMEI repair is illegal in many jurisdictions, including the UK and many parts of Europe, and MediaTek chipsets are notorious for having a volatile
This changes the NVRAM on the fly. Use with caution. These range from simple "Engineering Mode" commands on