How to check if HTC Sensation 4G is rooted

Method 1:

• Download Root Checker from MarketPlace
• Run Root Checker. If it says "the device does not have proper root access", it's not rooted. 

Method 2:

• Download Android Terminal Emulator from MarketPlace
• Run Android Terminal Emulator. Type "su" in the console. If it says "su: not found", it's not rooted
• Type exit to "exit" the app.