I was fiddling around with Verizon's VZ Navigator app when all of the sudden the phone just froze. Would not respond to any input. Not much I could do at this point but power it off. Went to turn it back on and it wouldn't start! I was like, crap!! I killed it!! I took a deep breath and found out how to reboot it (hold power button and volume down key at the same time for at least 10 seconds). Did that. Then pressed the power button again and it fired up. Woohoo!! I was really freaking out for a moment there thinking I just bricked my phone.