Apple on Tuesday questioned recent data showing smartphones using Google's Android operating system surpassing iPhone sales in the United States, and said there are no signs that the competition is gaining in the smartphone market.
Research in Motion was No. 1 at 36 percent, NPD said.
Apple said the NPD data didn't provide a complete picture.
"This is a very limited report on 150,000 U.S. consumers responding to an online survey and does not account for the more than 85 million iPhone and iPod touch customers worldwide," said Apple spokeswoman Natalie Harrison.