Why does my s6 go straight to answer phone

[AC Question]

My s6 goes straight to answer phone sometimes with nothing to say that someone has called until you get a text message saying you have a missed call if you turn the phone off and back on it works for a couple of days then goes wrong again any help appreciated thanks geoff

 

[Laura Knotek]

Hi and welcome to AndroidCentral. How is your coverage in the area you are in when this is happening? Could it be that you have poor signal from your carrier?