Hey guys! I just bought my first keitai phone. And even though I love it, it gives me plenty of headaches. Hopefully, with your help maybe I can fix the damn thing. I have a SHARP SH-N01, Lollipop 5.1.1. So, here goes.

First and foremost, am unable to use the physical buttons of the keyboard so I can type in my language (Greek). I can only use the S-Shoin keyboard for typing in English and Japanese which is totally compatible with every app, but not AOSP Google Keyboard that's already pre-installed (and has Greek as an option). Is there an app that can unlock the use of the keyboard with different languages and keyboard apps?I've tried plenty of keyboard apps, but none seem to do the job.

Secondly, the phone very often does not show me my missed calls. It just lists them as incoming on my call log, but not as a notification on the main screen, so I am missing a few calls as you can imagine.

Any help would be very much appreciated