Don't buy any of the new iPhones announced this week until you've downloaded iOS 12 to your current iPhone

iOS 12 brings a ton of improvements to the iPhone, but the biggest changes will come in the form of speed and performance — even on older devices. Apple says apps will launch up to 40% faster on the iPhone 6S, for instance, and you'll be able to open the camera up to 70% faster. App developers and early adopters already running the beta version of iOS 12 have reported great improvements on older devices.

阿婆以前也沒告訴你舊機會降速直到被抓到後說換電池就恢復跟新的一樣，所以不管你信不信iOS 12會讓6S app 和相機加速"激活"，反正我是不信