- iPhone 4s, iPhone 5, iPhone 5c, iPhone 5s, iPhone 6, iPhone 6 Plus
- iPad 2, iPad 3, iPad with Retina Display, iPad mini, iPad Air, iPad mini with Retina Display
- iPod touch, fifth-generation
iOS 8 adds new group messaging controls to the Messages app, a new focus on voice messages (using the microphone to record soundbites to send to friends) as well as quick shortcuts to picture attachments. You can also respond to incoming messages without losing your place in the system, by swiping down on the notification to reveal a quick-reply text box. Quick access to recent and favorite contacts is now accessible in the multitasking view, at the top of the screen.
The update also adds a ‘QuickType’ word prediction bar along the top of the keyboard, to speed up text entry. With Continuity, you can now carry on your SMS conversations across iPhone and iPad. However, note that this feature has been delayed until October, to coincide with the launch of Yosemite.
The Health app is a brand new addition for iOS 8, as well. It acts as a central location for all your health and fitness data. You can view charts of anything that is being tracked and favorite specific statistics to view on your Dashboard. The Health app is an integral part of the Apple Watch, which will be available early in 2015.
Whilst the Health app is exclusive to iPhone, the iPad has some device specific enhancements too. Most notably in Safari, there is a brand new tab view for iPad. It collects tabs into groups based on hostname, making management of multiple websites a lot easier to deal with. You can simply drag and drop tabs to rearrange them. iCloud Tabs are now visible below this grid view, reminiscent of the iPhone interface. You can pinch-zoom in both directions to enter and exit the tab overview mode. It feels really fluid and smooth, even on older hardware.
Spotlight search has also been overhauled with some new features across both iPhone and iPad. You can now search for nearby points of interest, movie times, news and much more right from the search box on your Home Screen. Spotlight will also flag up Wikipedia articles about your query inline.