There has been an increase in the number of iPhone users searching for pornography that can be viewed on the device.
According to Google, the number of searches for the phrase 'iPhone Porn' have rocketed in the past six months while Nielsen Mobile reports that that around one-third of iPhone owners use the device to watch videos, that's 10 times more than those who watch video on other brands of mobile handset.
"It's by far the porn-friendliest phone," Devan Cypher from adult movie makers Sin City Entertainment told Time magazine.
Farley Cahen, vice president of business development for AVN Media Network, the adult industry's trade body added: "There are a few hundred iPhone porn sites now in use".
Apple has banned all pornographic material from its store and maintains it will do what it can to stop the content being accessed by those under the appropriate age.
"Our iPhone 2.0 software will give customers the opportunity to turn on parental controls," said Jennifer Bowcock from Apple.