Guide: Update an Old iPhone – Guide
If you have an iPhone, it’s important to keep your device up to date with the latest Apple software. iPhones with iOS 5 or higher can be wirelessly updated directly from the device or on your computer via iTunes. iPhones with iOS 4 or earlier cannot be updated wirelessly, so you will need to use iTunes. If you have iOS 4, iTunes will erase everything on your phone during the update. So be sure to come back up your data before upgrading. You can set your iPhone to update automatically or update it manually. Here is what you should know.
How to update your iPhone automatically
The easiest (and safest) way to manage iPhone updates is to let your device handle it. Here it is how to make sure your iPhone is ready to automatically update:
How to update your iPhone manually
If you want to manage updates yourself, or phone is not installing updates automatically for some reason, you can do this yourself.
Problems solution tips if your iPhone doesn’t update
If your iPhone does not update manually or automatically, try these troubleshooting methods.
Make sure your iPhone is compatible
The latest iOS software update, iOS 15, is available for iPhone 6S and later, as well as iPhone SE (1st and 2nd generation) and iPod Touch 7th generation. That means if you’re still using an iPhone 5S or earlier, you’re out of luck. You can see a complete list of supported iPhone versions here.
Make sure you have enough available storage
iOS 15 takes up around 3.24 GB of storage, but you’ll need more than that to successfully install the update. In fact, you’ll need about 5GB of total free space on your phone to download and install the update. To see how much free space your phone currently, open the Settings app, tap General, then select iPhone Storage. Available space is shown at the top of the iPhone storage page.
Connect to Wi-Fi and charge your battery
Sometimes it’s the little things that block an iOS update. You must have a strong, reliable Wi-Fi connection, and your iPhone must have at least 50 percent battery life remaining. For best results, run the update on home or at the office, where you know you have reliable WiFi. And connect your phone to a cradle or loader before starting the update.
Restart your iPhone
Restarting iPhone can resolve a number of minor issues, including corrupt files or other bugs that can interfere with the iOS update. For details on how to restart your iPhone, see our article on how to reset and force reset for any iPhone model.
Update your iPhone from your computer
On rare occasions, you may encounter a glitch and find that your iPhone is unable to install an update, either automatically or manually. If this happens, you can install it from a PC or Mac.
Final note
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