It’s getting hard to quantify success of Apple’s iPhone. The iPhone 3GS was the quietest launch of the product line so far, yet they managed to go through a million phones in the first weekend alone, and without too many hangups.

There were some, though, and affected users are likely less than happy. Several new customers saw delayed activation, which may still take some time. Apple hopes to assuage their pain with $30 iTunes gift cards.

Apple’s sales statement included words from Steve Jobs, who’s made headlines recently for his struggle with pancreatic cancer and a recent liver transplant. “Customers are voting, and the iPhone is winning,” Jobs said. “With over 50,000 applications available from Apple’s revolutionary App store, iPhone momentum is stronger than ever.”

Jobs couldn’t be more right, though that could mean trouble for AT&T. Complaints about poor service due to network overload come in the thousands for the iPhone’s sole US carrier. The FCC also recently launched investigations into exclusivity contracts in the wireless market. There’s been no word from the Senate committee.