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brayhite

macrumors 6502a
Original poster
I'm trying to update my girlfriend's iPhone for her but unfortunately it won't let her on her own MBP because I've apparently authorized 5 devices with my iTunes. So I was going to use the 'Deauthorize all' function but my only question is will anything be lost or affected, e.g., purchased songs, synced Calendars, etc. when I do this requiring a resync and authorization, or will everything remain on the devices until I reconnect them to my MBP?
 
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