When I call, the display turns off, if I want to cut the call, it does

When I call, the display turns off, if I want to cut the call, it doesn't happen.

crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
crwdns2934285:0crwdne2934285:0