Once your device is rooted, follow these steps to restore your IMEI. Step 1: Install and Open the Tool Install the Mobileuncle Tools APK.
For , select "Phone 2" and enter the command: AT+EGMR=1,10,"YOUR_15_DIGIT_IMEI_2"
Changing an IMEI number to a random number, or a number from another device, is illegal in many countries, as it can be used for fraudulent activity.