How to fix IMEI Invalid or no service on Mediatek phones!

You only needs a PC, USB cable and ADB debugging enabled in settings.

Just launch a app from this link ;)

https://mega.nz/#!8VghhKwb!zheqokcoW-rHPIHBkehFEWdObY0N4giPY_hPQxyXeLg

Tested on Lenovo A806 with MT6592 chip. Sometimes you must try use this 2-3 times.

Please report any bugs here.