can officially update as far as iOS 9.3.6, many users in the legacy community seek out iOS 7.1.2 because it maintains a "fast and snappy" feel and includes the modern visual style of iOS 7 without the heavy lag of iOS 8 or 9. Review: Performance & Features Unlike the standard Go to product viewer dialog for this item. , which struggled with iOS 7, the
Standard methods for obtaining iOS 7.1.2 depend on your current software version: Download iOS 7.1.2 for iPhone 4[S] model iPhone...
running iOS 7.1.2 is considered desirable because it is significantly more usable for basic tasks than it would be on iOS 9. How to Get iOS 7.1.2 can officially update as far as iOS 9
iOS 7.1.2 is widely considered the "sweet spot" for performance on the Go to product viewer dialog for this item. How to Get iOS 7
includes full translucent "blur" effects in the Control Center and Notification Center, features that were disabled on the iPhone 4 to save resources.