Can I update my iPhone to iOS 9?

Business Insider AustraliaCan I update my iPhone to iOS 9?Macworld UKThe iPhone 4s has been the bottom for only a single version, as iOS 7 had iPhone 4 support, but there have been many complaints by iPhone 4S users on iOS 8 claiming their devices are slow and sluggish. This may suggest that the iPhone 4s could possibly ...Huge update to your iPhone expected TODAY – here's six things we want to seeDaily StarAnalysts Look For Updates on Apple Inc. (AAPL) Watch and iPhoneSmarter AnalystHere's how your iPhone home screen has changed through the yearsBusiness Insider AustraliaBenchmark Monitor -iOSnoops -TechSmashall 241 news articles »