Xda-developers android development and hacking android apps and games [app][mtk][2.3+] mtk engineer mode by zonarmr xda developers was founded by developers, for developers. it is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality.. Mtk engineering mode is an application that lets you activate advanced settings (‘service mode‘) on an mtk device. it let you activate a series of extra options on your mtk device. in other words, it lets you do more with devices from tecno, infinix, elephone, oppo, chuwi, etc.. Must read: how to backup/restore of android phone imei no for mtk device. how to fix or resolve lost imei number by engineering mode: step 1: open phone dialer then type engineering mode code * # * # 3646633 # * # * or *#4634# step 2: you will see engineering mode on your phone screen..
![[HD] How To Fix Invalid IMEI or No Network Issue on any ...](https://i.ytimg.com/vi/oO9vWaPkzQY/hqdefault.jpg)