How do I restart my iOS device?
Follow these steps to restart an iPad, iPhone, or iPod touch:
Hold the Sleep/Wake button at the top of the device for 5 seconds.
Run the slider across the screen to power off.
Wait 30 seconds, then start the device again by holding the Sleep/Wake button until you see the Apple icon.
Start your game.
Apple also recommends restarting after installing any application.
How do I restart my Android device?
The process for restarting your device may vary depending on the model.
Please consult your device's user manual or the manufacturer's support site.
After turning the device off, please wait 30 seconds before turning it on and playing again.