i have an HTC M8 showing incoming calls as unknown, please help

[AC Question]

Each time I get calls its shows unknown or I missed a call it will show unknown and doesn't make me identify which number called me even if I want to call back

 

[ilevbare 55]

Re: i have an HTC M8 (verizon) showing incoming calls as unknown, please help

Any help please, its really driving me sick