I’ve tried it several times and it also did not work.
Anyway I fixed the problem by installing an older version of the engine (4.8.3).
The version 4.9.2 and recent version this problem happens, I still don’t know what it is. Must to be some version bug.
Now I’m using version 4.8.3 and hope for some news.
Thanks for trying to help. I’m still attentive to suggestions.
This will use native resolution on all Android devices. Adjust as needed, or add additional sections. You can find the normal settings in BaseDeviceProfiles.ini in Engine/Config.
Looks like it is 720 x 1280 which is what the default of r.MobileContentScaleFactor=1 uses. It is already as high res as it will get. The other things you can try is disable Mobile HDR (in Render project settings) in case that device is trying to use mosaic mode to emulate FP render target; this lowers the resolution. You can also enable full screen mode to get back the area where the software buttons are (this is in the Android project settings).