On any modern SPD Android (8.0+), these codes give you read-only access or hardware tests. You cannot write an IMEI using dialer codes.
Some SPD-based Android devices allow access to "Engineer Mode" or an "IMEI Write" menu directly from the dialer. Try entering these codes: (Most common for SPD/Unisoc) *#*#3646633#*#* *#06# (Use this first to check your current IMEI status) Steps in Engineer Mode: Navigate to the Telephony or Connectivity tab. Look for IMEI Information or Radio Information . Select the SIM slot (Phone 1 or Phone 2). spd android imei repair code
You can often access hidden menus on SPD-based Android devices to check hardware status or restore connectivity settings using these dialer codes: Standard Engineering Mode *#*#83781#*#* Alternative Engineering Mode *#*#3646633#*#* Direct IMEI Menu (Specific Models) *#*#46349#*#* General Information *#*#4636#*#* Check Current IMEI 💻 Professional Repair via PC Tools On any modern SPD Android (8