Problems for opening my SMS and also my contacts-Lumia 625

Dear Sir/Madam,

my cell phone details are:

Name: Windows Phone

Model: Nokia Lumia 625

Software: Windows Phone 8.1

Since two weeks ago till now I couldn't open my list of contacts, people and save any new contact and also read any SMS and send SMS(however I got the SMS notification but when I want to open it didn't work ), I had reset in two ways: soft reset and also hard reset but didn't fix.

So please help me about these problems as soon as possible

best regards

Nasi