Why my kyocera phone freezes randomly?

I have a non removeable battery and it freezes....but it's waterproof y??

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

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2942205:01crwdne2942205:0:

I don't it's still frozen to...maybe I should sue virgin mobile

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0