cannot switch off iphone 4s
its been nearly one month i bought new iphone 4s from online on o2..
i tryed all restore, backup, switch off by holding lock button and slide to power off.....and everything from itunes,, my iphone won't turn off.. because of this iphone i miss my flight,, they ask me to switch off my phone...
or i have to show in apple store..
thank you..
iPhone 4S, iOS 5.0.1, o2 network uk