IPhone 4S due to the relatively aged hardware. In fact, some users often reported that performance on the 4S is very slow, similar to how iOS 7 ran on the iPhone 4, and suggesting that they should not upgrade due to battery draining issues and hanging up on calls. Meanwhile, Apple released iOS 8.1.1, which brought slight improvements to the phone and the iPad 2, but it still did not run as fast as newer models. On June 8, 2015, Apple announced at the WWDC that the iPhone 4S would support iOS 9. This makes it the first iPhone to support 5
Find My iPhone Find My iPhone allows users to locate their iOS devices using either the iOS app or icloud.com on a computer. In addition to locating a device, the service provides three key features: The update with iOS 6 added the ability to check the device's battery level. Since the release of iOS 7 users have complained about the link between GPS, WiFi, and the App itself. Some handset owners have noted the App enables and disables itself when passing between cellular protocol bandwidths. , the service is supported on iPhone, iPad, iPod Touch, and Mac computers running OS X 10.7.5 "Lion"