Hi I was trying navizon and it says that unable to locate and I pressed ok. But it suddenyl locked. It wont power down, power button doesnt work, power+home doesnt work as well. Any idea on how to reset the iPhone.

Whenever Ive had my Iphone crash, it was due to 3rd party party programs. I was however, able to reset the phone by holding down both the power button and the home button together for about 20 or so seconds. After which the phone will power down.

Simply turn it back on and it should be good to go !

It happened once to me when I was using navizon and once in the sketches program