Microsoft on Monday had pulled a portion of a Kin video ad showing a teenager "sexting" a photo of his bare chest using the technology giant's new smartphone.
"Microsoft has deleted the inappropriate portion of the Kin video," the US firm's SaferOnline Team said in an apologetic message posted at microblogging service Twitter. "We take sexting very seriously, and are sorry it happened."
Microsoft last week unveiled a new line of Windows-powered mobile phones called "Kin" aimed at young users which emphasize social networking.
The company came under fire in blog posts at Consumer Reports and other online outlets for the ad that appeared to promote "sexting," the sending of nude photos of oneself using camera-equipped smartphones, in a Kin ad.
The ad showed a teenage boy taking a picture under his shirt and then sending it to a nearby girl in an email.