Click on “Phone Information” image below
The next screen will take you to where you need to select either PHONE 1 or PHONE 2 this might be a little bit confusing but all that needs to be done here is to choose PHONE 1 if you’re changing IMEI for Infinix Note 3 SIM 1 while PHONE 2 should be chosen if you’re changing IMEI for SIM 2 as described in the image below.
After making your choice you need to enter your IMEI in the next screen.
You shall be welcomed with a blank screen with AT+ enter any number/letter after AT+ and choose the first option if you’re changing IMEI for SIM 1 while the second option onthe list with 10 is for SIM 2.
Enter your IMEI between those (“) and make sure there’s a space after AT(SPACE)+EGMR=blah blah
Now press SEND AT COMMAND when done.
Turn ON and OFF Airplane Or Restart Your device Mode to display new IMEI.