If you are working at an iMac and there is also a mains socket close at hand, is there any difference (in any respect) to charging an iPhone via USB cable linked to the Mac or is it more advisable to charge via a charger to the mains socket.
Is there a difference in the time taken to charge using one method than the other. ?
If using the Mac to charge, does it cause the Mac to use more RAM in the process (and could this prove to be detrimental on Mac performance if using resource hungry software). ?