This application make real change for your imei ,Not masking the imei or using fake one , it change globally the imei by new one .
it's better to make backup before you begin the change if your imei are already exist and valid.
Note that in more countries , the change of the imei are illegal so you will use this application at your own risk , Also this application help you to solve the problem of invalid or null imei and return network to your phone
this application tested for more MTK phones , so if it work for your model write in comment the model of your phone .
1- root required.
2- xposed framwork not required.
3- reboot to see the new imei
this tested for this models MTK67XX and MTK65XX and it work correctly so choose your model before you begin changing imei.
after you finish imei change check new IMEI by dialing *#06#