MTK Engineering Mode APK

MTK Engineering Mode is a free tool which does the job of allowing the user to enable Service Mode on Android devices with MTK chips. The user interface is rather basic and there are multiple settings with regard to Android and MTK. You shouldn't use this application if you don't know what you're really doing. This tool comes with a lightweight design and it should run fine even on slower devices.

You can tweak settings like BandMode, Auto Answer, Network Selecting, Modem test, and more. MTK stands for MediaTek and chips made by them can be found on many cheap Android devices.