• About iPhone and iPad Security
• Apple iPhone 4
• Apple iPhone - Setup
• Backing up an iPhone or iPad with iCloud
• Finding the Serial Number of Your Apple iPad or iPhone
• iPhone Models
• I received an image in HEIC format, what should I do?

Apple uses in phones and tablets the same operating system iOS (iPhone Operating System)

Because the operating system is not phone or tablet specific, the device versions and operating system versions are discussed separately in what follows.

Apple mobile devices

• iPhone models
• iPad models

Setup

Apple iPhone setup

Instructions by iOS version

iOS 10.x

iOS 9.x

iOS 8.x

iOS 7.x

iOS 6.x

Other useful links

Apple's own instructions

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iOS Apple