I did clean flash and after 2 weeks I'm reporting back to you. My data problem has been solved, no problems this time. Now I would like to address some issues I've had before.
I have some problems with Gcam, when I try to use settings, the app just quits and I have to reopen it and I just can't access the settings. And when I try to switch to wide camera, the app quits again and after I reopen it, the camera is changed, I have to do this every time, when I want to use wide camera. I hope anyone can help me with that?
I did notice a glitch/bug, not sure how to call it. It has happened couple of times now, when I run out of battery. I've plugged the charging cable into the phone, and when the phone boots to android, the touchscreen isn't working anymore. I can't even type my SIM password. So I have to force reboot it and after that it works normally. Not sure what can be done about that one, but I just wanted to let you know.
And I have another thing, which isn't broken but is bothering me. I can't find an option to hide navigation bar. I looked at display options, even gestures, but there's no option for it. So I'm not sure how can I hide a navigation bar in this android, so please if anyone knows, let me know.
Thanks for all of the support so far!