FORTUNE — Samsung overtook the iPhone on Apple’s (AAPL) home turf in the quarter that ended Sept. 30, according to a Consumer Intelligence Research Partners’ report obtained by Fortune Thursday.
In CIRP’s survey, Samsung accounted for 38% of U.S. mobile phone sales in Q3 2013 compared with 34% for Apple.
“Samsung appears to have taken a bit of share from Apple in the quarter,” said CIRP co-founder Josh Lowitz. “We attribute that to customers postponing purchase of Apple products until the anticipated iPhone 5S and 5C launch late in the quarter.”
Samsung took the quarter even if you subtract out the sales of their feature phones, according to CIRP.
The chart below shows how the launch of the iPhone 5 last year catapulted Apple back into the No. 1 spot. The launch of the new iPhones is expected have the same effect this quarter.
METHODOLOGY: CIRP bases its findings on its survey of 500 customers that activated a mobile phone in the U.S. in June-September 2013.
UPDATE: I see from the comments that I’m not the only one having trouble reconciling Verizon’s report this morning that of the 7.6 million smartphone it activated during the September quarter, 3.9 million (51%) were iPhones. I asked a CIRP spokesperson if he could explain the discrepancy. His reply:
I have a couple thoughts:
- If CIRP’s survey was conducted before Sept. 13, it wouldn’t have captured sales of the iPhone 5S and 5C. Those were included in Verizon’s numbers.
- In terms of simple methodological credibility, Verizon’s 7.6 million trumps CIRP’s 500.