If you’re an iPhone owner, it’s important to keep your device up to date with the latest software from Apple. IPhones running iOS 5 or higher can update wirelessly directly from the device or on your computer through iTunes. IPhones with iOS 4 or an earlier version can’t update over the air, so you’ll need to use iTunes instead. If you have iOS 4, iTunes will erase all content on your phone during the update, so be sure to back up your data before performing the update. Warnings Writer Bio

How to Get Older Version iPhones to Update - 8