Can I cancel an app download on the iPhone?
Once an application begins to download on your iPhone it may get interrupted or your data connection could be slow. Sometimes these apps freeze before completely loading. Can you cancel this app download?
You can't cancel the download outright. But tapping the icon will pause the download, stopping any data traffic to the App Store. To try completing the download make sure you have a good cellular data or Wi-Fi connection and restart your iPhone.
If you are near your computer, open iTunes and select Store -> Check for available downloads. This will download any pending apps to your library. When this is complete plug your iPhone into the computer and select your iPhone from the left menu in iTunes. Navigate to the apps tab.
Under Sync Apps, look for the app that was frozen downloading on your iPhone. If you want the app on your iPhone check the box to sync. Sync your iPhone with iTunes and the frozen download icon will be replaced by the app. If you don't want the app on your iPhone, leave the check box next to the app unchecked. Sync your iPhone with iTunes and the frozen download icon will disappear.