GPower extends your power down screen to include options for restaring SpringBoard, and rebooting. GPower extends your power down screen to include options for restaring SpringBoard, and rebooting. Ever been in a tricky situation, your iPhone froze, and you needed to restart it? GPower is perfect! If you’ve ever been in a situation where you need to respring your iPhone but can’t get to the proper app to do so but you can get the power off slider, GPower simply adds the ability to respring, reboot, as well as power off your ...