Two cores from your A5 chip deliver significantly two times more power and up to seven times faster graphics.2 And you’ll notice the effects. Fast. iPhone 4S is quick and responsive, which causes all the difference when you’re launching apps, browsing internet, gaming, and doing pretty much everything. And no challenege show up you’re doing, you can preserve on performing it. Because the A5 chip is really so power-efficient, iPhone 4S has outstanding battery life.