Among the plethora of things Apple changed over the years with respect to iOS’ user interface is the power down menu that appears when you press and hold a certain button sequence on your handset. On older handsets, you could access it merely by pressing and holding the sleep/wake button, but on newer handsets, you must hold sleep/wake and a volume button.
Like with most changes, not all users take as kindly to the updated interface as others, leaving plenty of wiggle room for nostalgia. For that reason, iOS developer PeterDev has just released a new jailbreak tweak called 7ower that ports the pre-iOS 7.1 power down slider to pwned iOS 11 and 12 handsets.