What if the iPhone6Plus SMS card dies?

1. Press and hold the Home button for 6-8 seconds to exit any programs that may jam the iPhone.

2. Try to hold down the On/Off button. If you can restart, this is the best.

3. If this doesn't work, try to press and hold the Home and Sleep/Wake buttons at the same time for about 10 second, and then you can force the shutdown!

4. If the above methods fail, you can try to connect to a PC and use the restart function in tools such as PP Assistant and iTools.