Phone app crashes back to main screen

[justonlumia]

Cannot open phone app with either of SIMs

 

[justonlumia]

Update. Its people app, phone and messaging

 

[libra89]

Hmm, have you tried a soft reset (volume down + power) to see if it still crashes after that?

 

[justonlumia]

Soft reset did not work

Now date and time are wrong and wont sync. Store and several more apps won't open