The above mobile phone concept never made it beyond the photoshopping stage.
Police in New Bern, North Carolina are trying to find the hoax caller who said there had been a shooting in the woods near the local high school. New Bern High School had to go into lockdown, and a highway patrol helicopter, police dog units and a dozen officers wasted their time responding.

The phone had been used in an earlier call pretending there was a shooting at a Burger King.

Since the phone number came from a prepaid cell phone, police have released the number and asked for help in finding the caller.

The phone number of the TracPhone is 252-626-7979.

– Update: Police release phone number of hoax call, Sun Journal>>
– Nokia cell phone gun at Freaking News>>

Are there really cell phones disguised as guns? Yes.
Phoney guns, Snopes>>