iOS 10 Complete UI
Here is a massive iOS 10 ui kit that will help you when you want to build app for iPhone. Added new iOS 10 app extensions such as Siri intents, Messages sticker and HomeKit, and many updated system elements (notifications, lock screen, widgets and more).
The kit comes in 4 sizes: ready for iPhone 5, 6 and 6 Plus and also 7. This useful resource was made and released by Oz Pinhas.