My Nokia 3.1 had problem with proximity sensor. It does not turn off display when call. I send it to Nokia Care and today I get answer from repair centre : Your Nokia 3.1 is being prepared for shipment to the address you provided. Unfortunately, the fault is not covered by warranty and your phone is either beyond economical repair (not repairable) or the repair quote has been rejected.
So THANK YOU Nokia it was nice not complete one year. And after this NEVER NOKIA .