Bluetooth file sharing is nearly always desired for a smartphone, no matter what awesome other features it packs. For iOS users, especially for iPhone users, including iPhone 4S, here are some good news. AirBlue Sharing is a smart tweak that now lets you transfer files through Bluetooth on an iOS. You can sent and received multiple files which may include photos, videos, contacts, notes etc. Moreover, the file transfer rate is excellent going up to 1.7 MB/s.