Spreadtrum (rebranded as Unisoc) manufactures cost-effective processors found in millions of budget Android smartphones and feature phones. Brands like Realme, Motorola, Nokia, Tecno, Infinix, and Itel frequently use these chipsets.
Power down the phone completely, wait 30 seconds, and turn it back on. Verify the configuration by dialing *#06# . Advanced Alternative Tools for Corrupted NVRAM
The official, specialized software for rewriting IMEI.
the smartphone to apply the changes. Check the restoration status by dialing *#06# . 4. Software Alternatives When Codes Fail spd android imei repair code
If your device's engineering mode supports direct IMEI writing (some modern firmware versions block this for security), follow these steps: Open the stock app. Enter the primary SPD code: *#*#83781#*#* . The EngineerMode application will automatically open.
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Type your phone's valid 15-digit IMEI numbers into the designated fields and click Save . Connect the Device: Power off your SPD phone completely. Verify the configuration by dialing *#06#
If you search for SPD "codes," you will likely only find codes to view the IMEI or enter diagnostic mode, not to change it.
For users of smartphones powered by Spreadtrum (now Unisoc) processors, few errors are as frustrating as the "Invalid IMEI" or "Null IMEI" message. Without a valid International Mobile Equipment Identity (IMEI), your device cannot connect to a mobile network for calls or data. This is where come into play. These engineering commands allow direct access to the device’s radio firmware, offering a software-based solution to restore lost IMEI numbers.
Restoring network functionality requires rewriting the original identity using an SPD Android IMEI repair code or specialized technical tools. Legality and Ethical Considerations Check the restoration status by dialing *#06#
Success rate: 60% on SPD Android 7–9; unreliable on 10+.
Carefully input the 15-digit IMEI number found on your device's original box or under the battery.
Before attempting any firmware or NVRAM flashing, ensure you back up your current ROM via custom recovery (like TWRP) if possible.