3 ms·Nor the iPad 2 and iPhone 4s.by zuck9 11y agoNor the iPad 2 and iPhone 4s.ck2 11y agoHow well does ios9 run on a 1ghz dual-core/512mb device like the 4s?zuck9 11y agoWorse than iOS 6/7, better than iOS 8.0 iOS 9 has the same performance as iOS 8.4