The device went into safe mode because the app that you downloaded was not a safe application. The device does this so that the application cannot cause more problems to your device. Even though the app was downloaded from the app store it was not deemed safe by your device. Here are some tips that will help you to get your device out of safe mode: -Ensure that if you have a case on your device that you take it off being that the case may be holding the volume button causing you to boot into safe mode -Try turning the device off then back on to get out of safe mode -Power off your device, then reboot by holding the power button + volume up key, then in the boot menu select reboot device -This is sometimes caused by the users accidentally tapping safe mode when cutting the device on so simply restart your device Most users have success by simply restarting the device in order to be able to get out of safe mode. Do your best to restart or reboot your device before you have to perform a hard reset to get the app off of your device to no longer go into safe mode In order to hard reset -Power off device -Hold down volume up + power -Release at the boot menu -Use the volume keys to highlight factory reset -Press the power button to select factory reset -After this the device will begin to reset itself -After it resets itself use the volume keys to highlight reboot device -press the power button to have your device rebooted in its factory settings