HOW TO CHANGE IMEI OF ANY ANDROID PHONE - Updated!!

The need for this tutorial is to enable those of you who want to rock GLO BIS on your android phones as that is the cheapest and most sensible subscription plan to browse on your android smartphones in Nigeria.

Disclaimer: IMEI change is illegal and voids the warranty of your phone. I am not responsible for any problem you create after this (though i may be willing to help) and in case you brick your device, OYO may be your case. So, follow the steps accurately.

Now, lets get down to business.

HTC PHONES

• Google/Bing how to root your phone, you'd find tons of methods.
•  Download this zip file from here and extract to your desktop
• Make sure you have adb drivers on your PC, if you are not sure download PDA Net from here
• Open command prompt and type the following 

                                cd desktop 
 

                            cd platform-tools 

                               fastboot.exe 
  Press Enter after typing each of the statements as seen below.

Don't close the Command Prompt!!

=> now boot your HTC to bootloader by pressing the power button + the Vol down button till a sreen comes up.
=> connect your phone to your PC
=> In the Command Prompt you left opened, type fastboot getvar imei This will display your current imei number.
=> Now type fastboot oem writeimei "insert the new imei here without the quotes" and  wait for a successful message and dazzall!.

TECNO, INFINIX, GIONEE & OTHER MTK DEVICES

NEW METHOD UPDATE!! 
For those using new Lollipop/Marshmallow OS or have just been unable to change their MTK phone imei, download Camelephone.apk from here and install the app. After installing, open the app and grant SuperUser access. Enter the IMEI and save. Reboot the phone and you'll find your new imei.

=> Make sure your phone is rooted, else follow this guide  here  or use RootGenius from here.
=> Now download Mobile Uncle tool to your android from playstore.
=> Tap Engineer mode and then Engineer Mode (MTK)

=> Tap CDS Information (search well its there), then click radio information and then tap phone 1

 

 => Type the following codes to the space with AT+ written

               AT +EGMR=1,7,"insert imei here with the quotes" 


  NB: Here you type the  imei with the quotes. Note that there is a space between AT and +. Also, to change Sim2 change the 7 to 10 i.e AT +EGMR=1,10.........

=> Click send and you will see a "ATcommand msent" success message now reboot your phone to complete the process.
=> Dial *06# to confirm the new imei.

UPDATE: If you want to change your IMEI because of GLO, read this first

OTHER PHONES

For other phones like samsung, lg, sony, asus and all other non mtk devices you can try this method here .

Don't forget to drop your comments, questions and suggestions.