dying z

Daphone

Well it have been a while with a Z phone getting more and more weird, but today it have taken a turn for the worse.
( remember i am a very casual phone user so some weirdness i can live with )

So now my phone loose my sim card ( connection to it ) not even reboot change this but suddenly it find the sim itself.
The desktop suddenly cough up that partly transparent frames you use to drop/ arrange your icons within, i can swipe that away but it often come back.
Along with loosing contact to SIM the phone also loose and regain contact to my memory card, so time and time again it ask me to decide where data should go first.

So if a factory reset later on dont fix this i am very afraid i will have to look for a new phone, though i under no circumstances can afford that.
But its either me figuring out something or my dear old sick mother ( which are the sole reason for me having a phone ) will buy one for me out of her meager pension,,,, and i just cant allow that to happen.

other issues i have encountered since day #1 is:

Cant hang up after a lengthy call, screen just remain black when i remove phone from ear, for short calls it work fine, dont seem to be able to hang up using any button.

Back camera lens glass cracked across laser ( no big deal, but honestly i never dropped this phone once )
Have settings set to fixed manual screen brightness, but this can change on its own while phone charge in car dock.
There are no relation to brightness in the car / outside, its not like automatic brightness perform, its just random brighter or dimmer LCD as it please.

Antenna / cell netork performance seem weak compared to my friends old windows phone Nokia, we have same provider and plan, but he consistently get better bars on 3G and lower ( his phone dont have 4G )
But when my Z give up getting mobile data, his Nokia still do fine with mobile data.