You still have no devices
The main problem of this phone is ROM - ZUI. GT with global ROM have unlocked bootloader - no NFC, no PAY, no OTA.
Switching (hard) to Chinese-English ROM, NFC, PAY and OTA works. But not Google. Can install Store with 3-rd party app.
After uninstall almost all Chinese app and install the desired one, the phone work smooth and fast ~ over 400k Antututu.
The second problem, camera, is solved. With tweaked GCam 7.2 app, GT can make good and clear low-light and HDR+ photos.
Personally, I recommend GT for initiated and gamers. In promotions you can have 8/256GB ultimate phone under 200 €.
Now I use Android 9 custom ROM, good phone for enthusiasts experiments
After a year I must change the battery with a bigger one
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