Iphone 5 back button problem?

Since this morning i can't go back on my iphone i was on the contacts page and i wanted to go back to the main menue but couldn't till I switched it off and on again and I still can't go back unless I switch the device off and on again. What should I do?

Maybe its the phone itself

  • When I press the lock button OR the home button.iPhone? When I press the lock button OR the home button, my iPhone takes a screenshot. It does the sane thing when I press the lock and home at the same time, but I know that it's supposed to happen
  • My home button and lock button don't work on my iphone 4 Okay so about 2 weeks ago my lock button stopped working and I don't know why so I went to mts store and they said to go to the apple store and i haven't been able to go yet and then tonight I was on my phone then I went to eat dinner so i put it in my sweater pocket then after dinner i took my phone out and it wan't responding! Is there anything I can do right now other than going to an apple genius? It's like 9 at night!
  • Is the iphone 5s' home button bigger than te iPhone 4S home button? Need As soon as possible me and my brother are getting into a fight about it cuz he said he's going to change the 4s home button to the 5s home button
  • Is it possible to replace the home button and the lock screen button on a iPhone? I've had my iPhone for about 2 months now, and the buttons are starting not to work. Besides the buttons my iPhone is in perfect condition. My phone carrier is straight talk, from Walmart. They don't offer insurance or a warranty or anything like that. So I was wondering if it was possible to replace these buttons?