When this happens, the phone boots up, but instead of signal bars, you see a crossed-out antenna or a message saying "Invalid SIM." This is where the technician’s toolkit becomes vital.
for IMEI modification in a particular country, or should we look into the technical differences between MTK and Spreadtrum repair methods? china keypad mobile imei repair tool
For this tutorial, we use a generic MT6261 keypad phone (brand: "Torque" or "Kechaoda") with . When this happens, the phone boots up, but
