IPHONE 4 OPERATING MANUAL

Update your iPhone or iPad - Apple Support - iOS 4
Sep 28, 2022Update your iPhone or iPad wirelessly. Back up your device using iCloud or your computer. Plug your device into power and connect to the internet with Wi-Fi. Go to Settings > General, then tap Software Update. Choose the software update that you want to install. You can choose to stay on iOS or iPadOS 15 and still get important security updates.
If your iPhone, iPad, or iPod touch gets too hot or too cold
Dec 16, 2021Using an iOS or iPadOS device in very cold conditions outside of its operating range might temporarily shorten battery life and could cause your device to turn off. Battery life will return to normal when you bring your device back to higher ambient temperatures. Your iOS or iPadOS device might not charge or could stop charging if it gets too cold.
iOS version history - Wikipedia
The version history of the mobile operating system iOS, developed by Apple Inc., began with the release of iPhone OS 1 for the original iPhone on June 29, 2007. Since its initial release, it has been used as the operating system for iPhone, iPad, iPod Touch, and HomePodinuous development since its initial release resulted in new major releases of the software, typically
iPhone 7 Plus Repair - iFixit
The iPhone 6s Plus' successor, the iPhone 7 Plus was formally announced by Apple on September 7, 2016. New features include a quad-core system-on-chip with improved system and graphics performance, an updated display, IP67 water and dust resistance, and an exclusive dual-camera system that sets it apart from its smaller sibling, the standard iPhone 7.
Amazon: Iphone 8
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Services & Software - CNET
Not Every iOS 16 Feature Knocks It Out of the Park. Luckily, There's a Fix. There's a lot to love about the latest iOS 16 update for your iPhone -- but there are also a few things you might dislike.
Amazon: iphone 12
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Accessibility - Apple (UK)
Live Listen requires compatible Made for iPhone hearing devices and supports iPhone 4s or later, iPad Pro, iPad (4th generation or later), iPad Air or later and iPad mini or later. To use Live Listen with AirPods, AirPods Pro, AirPods Max or Powerbeats Pro, the iOS or iPadOS device requires iOS 14.3 or later, or iPadOS 14.3 or later.
Apple iPhone 14 – Colors, Specs, Pricing & Reviews | AT&T
iOS: 16 Subject to change based on future operating system updates: Face ID: Enabled by TrueDepth camera for facial recognition: Apple Pay® Pay with your iPhone using Face ID in stores, within apps, and on the web Send and receive money in Messages with Apple Cash 7 Complete purchases made with Apple Pay on your Mac Pay for your ride using Express