Trick to recalibrate your iPhone's home button
All you need to do is just follow these simple instructions:
1. Launch any app such as Stocks, Weather etc that comes pre-installed with your iPhone.
2. Press and hold the power button until you “slide to power off” appears on the screen.
3. Release the power button and now press and hold the Home button until the "slide to power off" goes away.
That's it.
