The New Beta 4 of iOS 5 is the first software from Apple that can be downloaded using Apple’s new over-the-air. Macrumors team mentioned that the full version of iOS 5 Beta 4 is 824MB, However iOS 5 beta 4 over-the-air update is 133 MB.
Over The Air updated downloads only the codes that have been changed in the update, This saves nearly 700MB of downloading in this update. Nice.
