In iOS 7.1 Beta 3 You Can Manually Delete Over-The-Air iOS Install Files
It looks like iOS 7.1 beta 3 users have the option of manually deleting iOS install files which have downloaded over-the-air (OTA).
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Now iOS 5 Can Update Over 3G
Good news for those who travel a lot, iOS 5's over-the-air update feature will work over your carrier's 3G network, not just Wi-Fi. That means easy and PC-free updates, wherever you are.
