Hi
RAVISUPRITH,
Brightness issue-> Could you describe in more details and possibly provide us a screenshot?
Display screen color option missing. -> Could you let us know which setting you're referring to?
Earphone sound quality is bad. -> This behavior is under investigation. Thanks for your understanding.
Huge gap between keyboard and navigation gesture when keyboard opens. -> Could you show us a screenshot of this behavior? Does it appear with different apps?