Often used for newer UNISOC devices like those from Infinix , Tecno , or itel to fix "Invalid IMEI" messages on recent security patches.
You can attempt to access the internal repair menus by dialing these codes into your phone's dialer: *#*#3646633#*#* or *#*#83781#*#* Alternate SPD Codes: *#*#9646633#*#* or *#*#4636#*#* View Current IMEI: *#06# Repairing IMEI via Engineering Mode
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Install the Spreadtrum/UNISOC drivers on your PC. spd android imei repair code
Tap SEND AT COMMAND . You should see a "Command Sent" message. Reboot: Restart your phone to apply the changes. 💻 Repair via SPD Write IMEI Tool (With PC)
Once inside this menu, users can access low-level hardware configurations, including the cellular modem settings where IMEI information can be read or re-entered. 2. Common SPD Engineering Mode and IMEI Codes
SPD is among the hardest to repair without a box/dongle. Often used for newer UNISOC devices like those
Enter your original 15-digit IMEI numbers for SIM 1 and SIM 2.
Install the Spreadtrum USB drivers on your PC. Download the WriteIMEI tool. Run WriteIMEI: Launch the SPD_WriteIMEI.exe application.
An IMEI (International Mobile Equipment Identity) is a unique identifier used by global cellular networks to recognize legitimate devices and block blacklisted or stolen phones. If you share with third parties, their policies apply
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Before diving into the repair codes, let’s understand the problem.
Once you successfully gain access to the Spreadtrum Engineer Mode interface, follow these steps precisely to restore your cellular configuration.
Popular choices for SPD devices include:
Leo rebooted the phone and typed the universal command: . The numbers popped up instantly. The signal bars jumped to life, and the workshop was suddenly filled with the chime of incoming messages. The repair was complete.