CLEVELAND -- Most computer users are used to receiving forwarded e-mails. Usually they contain a silly or outdated warning.

5 On Your Side consumer reporter John Matarese checked out one e-mail regarding cell phones that sounded plausible so you "don't waste your money."

The e-mail tells consumers about all the great things your cell phone can do, especially in the event of emergency.

It's great information -- only most of it is not true, Matarese said.

It includes a code for boosting your battery's power when it starts to get low.

Another secret tells consumers how to use their cell phone to unlock their car door if they lose their keys.

Katy Elliot was so sure the e-mail was true that she sent it to her friends.

But when Matarese asked her to punch in the code to boost her battery, she discovered there was no hidden battery boost.

"It says not available," Elliot said.

Matarese was also unable to unlock his car door, by having someone click a spare remote control box over a cell phone.

He said to treat all forwarded e-mails with skepticism. About 95 percent of them are untrue.

He suggested doing some research before sending e-mails to 100 friends.