crwdns2933897:0crwdne2933897:0

Touch screen not working after 30 min worked ok

Hello my touch screen stop working when I leave phone for about 30min no response at all I have to reboot and its come back to fine. What could be caused? Many thanks for your help

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

crwdns2934109:0crwdne2934109:0

crwdns2853045:0crwdne2853045:0 crwdns2853046:0crwdne2853046:0
crwdns2889612:0crwdne2889612:0 1
crwdns2934285:0crwdne2934285:0