30 seconds to copy 16GB? I don't think so.
I see you pulled the usual Swordmaker trick of putting words in my mouth to suddenly qualify my statement so that you can try to prove your point; I never said what size iPhone, now did I?
But let's just take a look anyway... With a transfer rate of 480 Mbps, you could copy 8 GB in about 20 seconds, and 16 GB in about 40 seconds.
I know I've seen close to that sustained rate with Ubuntu and Win 7; is the iPhone too slow to allow those kinds of transfer rates?