The result for some carriers is a two-week delivery time for the iPhone 5 after Apple initially promised delivery by next Friday, when the phone becomes available in stores.
Apple began taking orders for the latest iPhone installment at 12 a.m. PT. Four hours later, the expected delivery time had grown to two weeks, according to Topeka Capital Markets analyst Brian White.
"Clearly, iPhone 5 fever is in full swing," White said.
As of Friday afternoon, only Sprint was still promising delivery in a week. Verizon Wireless said delivery would take two weeks and AT&T said it would take "14 to 21 business days."
While the extra wait is disappointing to some, it's good news for Apple, as this is a sign of strong demand. Last year, one-week delivery of the iPhone 4S was available into the afternoon of the first ordering day.
Meanwhile, Apple's stock rose $8.02, or 1.2 percent, to $691 in afternoon trading, after hitting an all-time high of $696.98 earlier in the day.
The Associated Press contributed to this report.