I have QMobile z8 and I have a problem from 2 days

in my androib kitkat version facebook youtube videos is not playing and when i open every app like gallery music qapps all are showing unfortunately has stopped and also when i call from messenger imo wechat etc all are showing unfortunately has stopped and when i on off my mobile it take a lot of time and when mobile is on wifi is not working after 2 or 3 minutes its work and finally it is also not accepted sim card
I reset format my mobile 5 or 6 time but it doesn't work

Weird Chinese popup since a few days

Since a few days I get two weird Chinese popups in succession. I haven't installed any new app in at least two weeks and no app-update has asked for new permissions.

I've attached the popups, maybe somebody can read them and tell me what they say.

It's probably malware so will reinstall anyway.

Attached Thumbnails