2Throw the app off the top of the screen to close it.
3Throw any other open applications off the top of the screen to close them.
Why this might help
One or more of your open applications could be reserving so much memory that there's not enough memory left to do real work. Closing apps can free up enough memory so you can continue working.
T2. Turn your smartphone completely off and on
NOTE If the screen is off and you can't turn it on or if gestures don't work, skip to T3.
1Press and hold the power button.
2Tap Power and then tap Restart.
Why this might help
Restarting your smartphone closes all applications, frees up all memory, and reinitialises wireless services (phone, Bluetooth® technology,
TIP An occasional restart can be good for your smartphone just the way a restart can be good for your computer. Every once in a while, restart your smartphone.
T3.
1Press and hold the power button.
2While still holding down the power button, slide the ringer switch three times.
Wait a few seconds for the restart to begin.
Or try this method for restarting your smartphone:
and hold Option + Sym + R and then release the keys all at once. Give this method at least 10 seconds for the restart to begin.
Why this might help
A
NOTE Because open applications are forced to close immediately during a
186 Chapter 14 : Troubleshooting