A warning to cell phone users when trading in your old device -- make sure no sexually explicit photos are on it. 

Sprint is being sued by a Los Angeles woman who claims employees posted racy pictures of her online, by using her own Facebook app.

She accuses the wireless company of invasion of privacy, infliction of emotional distress and identity theft. 

The lawsuit claims she traded in her old phone at a local outlet where it was then sent to Sprint's refurbishing plant in Louisville.

"Rather than simply erasing the data, employees from Sprint found the images, there were some sexually explicit images, and posted them on the Internet," says attorney Travis Crabtree from Houston's Gray Reed & McGraw.

Crabtree calls it a hard lesson to learn about the risk holding on to these types of images.

"They have policies and procedures in place, but again, when the human element is involved, there's always a risk that the individual human is not going to do it," he tells KTRH News.

Crabtree all of this could have been avoided if the woman followed a few simple steps.

"You can reset it to factory settings, which usually gets rid of all of this," he says.  "The best advice though is don't take sexually explicit pictures on your phone."

Experts also suggest logging out of all apps to ensure they can no longer be accessed.