Re: cambsukguy
reasons to plug your phone into your computer....to charge it, add / change music, OS updates, App updates. Some of these can be done wirelessly, but some people (such as myself) prefer to download large updates to a PC, not direct to the phone.
also, you say, your phone has an SD card, which is great, but, another things this supposed Pro Macbook doesn't have, is an SD reader, so, you would need to plug your phone in to read from it.