Why has my Lumia 635 stopped working, when it was ok last night?

[WPCentral Question]

lumia 635 not working. was ok last night, ?

nokia 635 screen won't unlock. The data sense isn't working, also phone not showing up when I connect to computer. every thing was working alright last night. I've done a reset & still hasn't fixed the issues. anyone got any idea on how to fix it please?

 

[Guytronic]

Re: lumia 635 not working. was ok last night, ?

Remove the battery then re-seat your SIM and SD if you have one.
Restart and see if the phone begins functioning normally.