Released in September , iOS 7 was immediately available for the iPhone 4 and newer iPhone models. If you are having trouble updating your iPhone 4 to run iOS 7, the problem can usually be resolved at home without a trip to an Apple Store for support. Available Space One of the most common barriers to installing iOS 7 on an iPhone 4 is available space. According to TechAdvisor website, the update requires at least 1. The space is used primarily during the installation process to store the temporary file.
To see how much space you have available on your iPhone, tap the "Settings" icon, choose "General" and select "Usage. Start with video files, which take up a large amount of space. While you're at it, remove old or unused apps and clean out your photo library. If you still need space, clear out podcasts that you've already heard and move songs to your computer temporarily. When downloading and installing the files over a Wi-Fi connection, the update may fail to complete if the iPhone battery is low; plug it in to ensure steady power during the update.
If your Wi-Fi signal is unstable or too slow, the update may also fail. Power cycle the router and place the phone closer to it to avoid timeouts or incomplete installations. Current iTunes Version While an iPhone 4 running iOS 4 firmware can update to iOS 7, it cannot update wirelessly; it requires a wired connection to iTunes on a computer.
If you have not had success updating your operating system, your iTunes may be out of date. Apple requires that you use the latest version of iTunes to download software updates. On a Mac, choose "Check for Updates" from the iTunes menu. On a Windows machine, the option is in the Help menu. After the update is installed, restart your computer, connect your iPhone and click on your phone's device name in iTunes.
Click on the "Check for Updates" button and follow the prompts to install iOS 7. Incomplete Installation The iOS 7 update process happens in two steps. First, you download the update from the Internet; then, you install it. If your phone was disconnected or the process was interrupted, the phone won't update properly. You may receive an error message or notice that the phone is behaving erratically. In that case, you need to start over.
Restart your phone, turn off your Wi-Fi connection and shut your phone down. Leave it for at least five minutes before turning it on the iPhone.
Turn on your Wi-Fi connection. Tap "Settings" and choose "Software Update.