On PC or Mac, you can easily reboot it using a couple of mouse click. But there is no direct way to reboot your iPhone. A hack called GPower targets to On top of the built-in “Slide to Power” function, GPower is a new cydia application that adds “Slide to Reboot” and “Slide to Respring” features to iPhone. GPower only works on jailbroken iPhone and it also supports iPhone 3.0.

Normally, to reboot your iPhone, you’ll need to first power it of and then turn it back on again. With GPower, it adds options to let you slide to reboot.

Install GPower Via Cydia

Launch Cydia > Select “Sections” at haptic menu > Select “System” category > and select “GPower” or you can tap “Search” in Cydia and type “GPower” > Select “install” button at the right top and confirm it to install.

Once installed, you can simply press and hold the “Power/Sleep” button to invoke it.

NOTE: SBSettings is an alternative cydia app to let you reboot or respring the iPhone.