Why are all my apps constantly stopping on Huawei G526

A

AC Question

Google play store has stopped working, contacts have stopped working, android. Core has stopped working, I have cleared cache, still not working, cannot add new contacts, as in the middle of adding information, sorry contacts has stopped working.
All day today this has been happening 16/12
I don't know if its the phone or anything to do with the network Vodafone?
I have uninstalled new update for Google, so that now back to original factory setting.
Basically all I can do luckily is make phone calls.
Can anyone tell me why this is happening all of a sudden?
All updates have been used Google Play Store.

I appreciate you taking the time to read this & would be grateful for any information as to why this is happening.

Cheers,
EssexRocks.