HOW TO REPAIR INVALID IMEI MTK DEVICE

           1.     MTK Engineering

·        Select Engineer Mode or dial *#*#3646633#*#*

·        Select Engineer Mode MTK

·        Select CDS Information from the Connectivity tab

·        Select Radio Information

·        Select the SIM you wish to change the IMEI on

·        At the AT+ enter E then chose AT+EGMR=1,7””

·        For SIM 1 enter AT+EGMR=1,7”put your imei1”

·        For SIM 2, enter AT+EGMR=1,10”put your imei2”

·        Press Send At COmmand you'll get a message shown At Command Sent

·        Finally reboot your phone  check with dial *#06#

2.  Chamelephon

           ·     Must be rooted your device

           ·     Download Chamelephon apk

           ·     Install then Open put both IMEI 1 and IMEI 2

           ·     Or if Forget imei You can press generate random IMEIs

           ·     Then press Apply new IMEIs

           ·     Finally reboot your phone  check with dial *#06#

3.  MTK DROIDTOOLS

·  Extract the MTK droid tools you downloaded. It would be extracted to the same folder the zipped file was except you change the location. On extraction, you would get a "MtkDroidTools" folder.

·   Open the folder and click on MTKdroidTools.exe to launch it

·   Install the ADB drivers if it has never been installed on the computer before. Connect the phone into the computer. On connecting, it would be identified with phone's information displayed. IMEI would be displayed too if its not having issues. But if an issue is present with the IMEI, it would be missing.

·   Now click on the ROOT button at the bottom right of the page. This button would be greyed out if the phone wasn't already rooted. So you really need to root your phone before you begin the process. Root access is needed for the tool to run scripts.

·   will ask if you want to 'receive root shell through already established SU', just click 'Yes'.

·   Once that has been done, click on the 'IMEI/NVRAM' tab close to the IMEI part.

·   You would need to type in your IMEI number as seen from your phone case or inside the phone and then click on Replace IMEI.

·  You would be asked if you want to replace your IMEI, click Yes and then another window will tell you that 'changes will come into force after reset'. Click OK and then  Finally reboot your phone  check with dial *#06#