Pressing and holding a certain button sequence on your iOS device (the sequence varies depending on the device) invokes the power down menu from which you can easily turn your handset off. Unfortunately, iOS’ native power down menu has an ongoing reputation for being somewhat ‘featureless.’
In an attempt to change that, iOS developer conorthedev released a new free jailbreak tweak called ModernPower, which gives iOS’ native power down menu a modern facelift and supercharges it with additional features that you won’t find out of the box on a stock device.