IPhone – Factory Reset
Press and hold down the Sleep/Wake button and the Home button at the same time for 10 seconds.
Press and hold down the Sleep/Wake button and the Home button at the same time for 10 seconds.
If the home button is no longer as responsive as it used to be, then sometimes a quick home button recalibration can fix this issue:
1) Open a stock app, like Weather or Stocks.
2) Press and hold your power button until “slide to power off” appears and release.
3) Press and hold your Home button until the “slide to power off” goes away, and the app force quits. Your Home button should now be more responsive, because it has been recalibrated.
Note : some may prefer FakeFaceup over Speed Intensifer
More Drastic Actions
You can disable backup in iTune.
http://www.digidna.net/products/backoff
and, you can enable it back