DouQin Qin F21Pro

This device is unique, as it is with a traditional physical T9 keyboard (like old Nokias). Because this, you need to copy /system/usr/keylayout folder from a stock ROM into your GSI ROM. Works with all firmware versions, but from my experience best with 1.1.1.

Steps to install

• Unpack super.img
• Replace system_a.img with GSI img.
• Repack super.img
• Flash new super.img with SP flsh tool. (Maybe you can also flash through a pastbot like on other devices, I haven't tried).

Hardware support

Component	Comment
Camera	work
Speaker / Mic	work. for headset, need patch. see here for more info.
Bluetooth	work to transfer files. for headset, need patch. see here for more info.
WiFi	work
SIM / Mobile Data / Voice	work
VoLTE	work (not in israel)
Fingerprint	-------------
NFC	-------------
Offline Charging	work
Other feature	physical keyboard - work, but only partially. For better support, needs fixing. I wrote at the beginning of the page.

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Tested By: @AshiVered.