105 Ta 1203 Imei Change Code Free !!top!! - Nokia

In some cases, the IMEI of a phone can become corrupted or "null" (often reading as 000000000000000 ) after a failed software update, an improper flashing of firmware, or due to corrupted memory partitions. This results in an "invalid IMEI" error, which makes it impossible to connect to a cellular network, make calls, or send messages. In this scenario, a user might need to restore their original, legitimate IMEI to get their phone working again. This is a repair process, not a change to a different number.