Hold down the button and connect the USB cable to the computer.
It is illegal in many jurisdictions—including the United States, United Kingdom, and European Union—to alter, change, or spoof an IMEI number to bypass a carrier blacklist or activate a stolen device. The steps outlined above must only be used to restore the original, factory-assigned IMEI belonging to your specific hardware unit as printed on the original box or SIM tray slot.
Back up all photos, contacts, and personal data. System flashing wipes the phone completely.
The Sony XZ3 uses the chipset. When EFS/modem partitions are corrupted, you must write the IMEI manually using Qualcomm’s engineering tools. repair imei sony xz3
If the IMEI is missing due to a minor software glitch or an interrupted OTA update, flashing clean, official Sony firmware can restore the corrupted partitions.
: Most repair software requires the device to be in Diagnostic Mode . This is often triggered via specific ADB commands or terminal scripts ( setprop commands). Diagnostic & Helpful Features
: Changing an IMEI to bypass a carrier blacklist or hide a stolen device is in many jurisdictions. Restoring the Hold down the button and connect the USB
On the Sony Xperia XZ3, the IMEI is stored in a dedicated, protected storage block within the device’s internal memory, known as the . Common Symptoms of IMEI Damage
If your Sony XZ3 shows an “invalid IMEI” or “null IMEI” after a firmware flash or software issue, the legitimate path is:
Enable on your phone and connect it to your PC. Open a Command Prompt in your ADB folder. Type adb reboot bootloader to enter fastboot mode. Flash your backed-up partition using the specific commands: fastboot flash modemst1 modemst1.img fastboot flash modemst2 modemst2.img fastboot flash fsg fsg.img Type fastboot reboot to restart the phone. Method 3: Using Specialized GSM Service Tools Back up all photos, contacts, and personal data
The status bar shows "No Service" or "Emergency Calls Only" despite a valid SIM card.
: Tools like Miracle Box or rooting apps (e.g., Kingo ROOT) carry a high risk of "bricking" the device, making it permanently unusable if the EFS partition is wiped incorrectly.
Locate the original physical IMEI on the SIM tray slot or the original packaging box. You will need this original number to restore official functionality. Method 1: Restoring via Official Sony Xperia Companion
Repairing a corrupted IMEI to match the original number printed on the phone's retail box or SIM tray is legal in most jurisdictions. It restores the device to its original factory state.
IMEI After Software Corruption