When in doubt, restart
If your iPad is experiencing issues such as freezing, apps crashing, or slow running speed, then it is time to reboot the device. Restarting/rebooting your device is the number one tip for troubleshooting most problems for iOS devices.
A common misunderstanding for iOS devices is that tapping the sleep button is not restarting the device; it is simply putting the device in "power save" mode. Rebooting the device wipes the device clean and closes any open apps in the background. This will clear out the available memory used by applications and give the iPad a fresh start, which should help with issues like those listed above.
Before completing the steps below for rebooting your iPad, it is important to be familiar with the two buttons on the iPad that are involved. The Sleep/Wake button is located on the top right-hand corner of your iPad and is used to lock your iPad. The Home button is circular and located on the bottom middle of your iPad.
Press and hold down both the Home and Sleep/Wake buttons on your iPad for approximately 7 seconds until the screen turns black
After about 30 seconds, hold down the Sleep/Wake button until the Apple logo appears