Is using someone else's computer to charge you're iPhone safe?

Hi, if i were to use someone else's computer to charge my iPhone and iTunes pops up automatically does it usually back up my information on that computer? Or do i have to do it manually for it to back up and sync.i'm worried my personal stuff has been backed up on someone else's computer.

No, your phone can only be activated on one itunes libaray at a time. It would ask you to authorize itunes to change settings on the iphone. Which you would deny then it would just charge your phone. You should be good.

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