Repairing an IMEI on a Spreadtrum (SPD) or UNISOC Android device typically involves using specialized "Write IMEI" tools or secret engineering codes. These methods are generally used to restore a lost or "invalid" IMEI after a software flash or corruption.
Note: Changing an IMEI to a different number is illegal in many countries. These tools should only be used to restore the original IMEI printed on your device's box or battery compartment. 🛠️ Repair via Engineering Code (No PC)
Some Spreadtrum/UNISOC devices allow IMEI repair directly through the dialer. This is common on older models or specific brands like Tecno.
Open Dialer: Type *#*#3646633#*#* or *#7465625# to enter Engineer Mode.
Navigate: Go to the Connectivity tab and select CDS Information > Radio Information.
Select SIM: Choose Phone 1 (for SIM 1) or Phone 2 (for SIM 2). Enter Command: For SIM 1: Type AT +EGMR=1,7,"YOUR_ORIGINAL_IMEI". For SIM 2: Type AT +EGMR=1,10,"YOUR_ORIGINAL_IMEI".
Apply: 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) spd android imei repair code
If the code method doesn't work, you will need a Windows PC and the SPD Write IMEI Tool. Prerequisites
SPD USB Drivers: Must be installed so the PC recognizes the phone in "Diag Mode".
Original IMEI: Locate the 15-digit number on the device's sticker. USB Cable: A high-quality data cable. Step-by-Step Process Open Tool: Launch WriteIMEI.exe on your PC.
Select Port: Check Device Manager to find the COM port (e.g., COM63) and select it in the tool.
Mode Select: Click Mode Select, choose Normal Mode, and click Select.
Enter IMEI: Paste your original 15-digit IMEI into the IMEI 1 (and IMEI 2 if dual-SIM) fields. Repairing an IMEI on a Spreadtrum (SPD) or
Connect Phone: Power off the phone and connect it via USB. You may need to hold a "Boot Key" (usually Volume Down or Up) while connecting.
Write: Click Write or Start. The tool should display a green PASS message when finished.
Verify: Disconnect and reboot. Dial *#06# to verify the restored IMEI.
Could you tell me the model of your phone and what happened to the original IMEI (e.g., did it show "invalid" after an update)? I can help you find the specific boot keys or drivers for your exact device.
Disclaimer: This guide is for educational purposes only. Changing an IMEI number is illegal in many jurisdictions and can result in network blocking or legal penalties. It is intended for technicians repairing devices to restore the original IMEI lost due to software corruption.
Here is a technical guide regarding IMEI repair on devices running on Spreadtrum (SPD) chipsets. choose Normal Mode
*#*#3646633#*#*However, that is the generic MediaTek engineering code. SPD has its own. Depending on the brand and Android version (Go Edition, Android 10/11/12 Go), the codes vary.
Here are the actual SPD-specific engineering codes used for IMEI repair:
| Function | Dialer Code | Works On |
| :--- | :--- | :--- |
| SPD Engineering Mode | *#*#83781#*#* | Most Tecno, Itel, Infinix (Android 7-11) |
| Factory Test Mode | *#*#3646633#*#* | Some SPD variants (cloned from MTK) |
| Unisoc Engineering Mode | *#*#2580#*#* or *#*#958#*#* | Newer Unisoc (SC9863, T606, T610) |
| Debug & Test | *#*#889#*#* | Older SPD SC7715, SC6820 |
| ZTE/Blade specific | *#*#983#*#* | ZTE phones with SPD chipset |
Important Note: These codes do not magically generate a new IMEI. They open a secret menu where a specific tool called "Connectivity" or "CDS Information" allows you to write the IMEI manually.
Before attempting repairs, you must verify the current status. SPD devices use a specific diagnostic port that must be enabled.
Common Enable Codes (Dial these on the phone):
*#*#83781#*#* (Common for older SPD versions)*#*#8378#*#**#*#717717#*#**#*#1349#*#*Procedure:
SPRD U2S Diag or Spreadtrum Diagnostic Port).A: "Null" means the NVRAM is empty. "Invalid" means the IMEI checksum failed (you typed a wrong digit). The SPD code repairs both.