i'm so pissed off last friday. I lost my Iphone 4s from the salse counter when I was at work. When I tried to reach, That Mof sob has already switched off the phone. Is there any way I can destroy or make that phone usless? 

i CALLED THE POLICE RIGHT AFTER THE 15 MINUTE  POLICE CAME AFTER AN HOUR. AND I SHOWED THEM THE VIDEO INSTEAD OF SEEING VIDEO AND PREPARE SOME REPORT THOSE POLICE OFFICER ASK MY PROFILE.
MY CARRIER IS ATT. I HEARD THAT THEY CAN TRACK THE PHONE IS IT RIGHT? iF THEY CAN TRACK, IS IT POSSIBLE TO FIND THE PHONE?

THNAK YOU GUYS
HAVE GOOD WEEKEND.

Are you worried that he might access all your data and information on that phone? If yes then don't panic. I believe you must have set up pass code to access the home screen. There is no way that he could access your home screen without performing hard reset of that phone unless somehow that douchebag managed to guess your passcode. Once, he goes for hard reset then all your data on your phone would be erased from that phone. 
ATT can track and black list the phone but I don't think they do that often. So, dont pin hope on ATT.

Update: Seems like there is a way to bypass passcode on iphone but not sure which version of IOS is there on your lost phone.

have u heard about  track my iphone app 

police officers won't do anything because thats considered as petty theft. They will however file a report as stole, which you can use to get a new one "if" your phone is insured. Otherwise you are "effed'up" my fren ..iphone 5 is coming out so ...dui char paisa aajhai jack hana aani ta pugi halcha ni... OH yeah like the dude mentioned in the earlier post: You can track your phone "IF" you have a "find my phone" synced with iCloud. Good Luck hunting..