Why does my phone have a glitch, dialing numbers, freezing,etc

Phone doing what it wants to do

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

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0

crwdns2942205:01crwdne2942205:0:

i have the studio x5 and mine does this too. it also makes calls and txts random people in my contact list on its own. i even have the main screen password protected.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0