Are there any apps to turn a smartphone into a walkie-talkie or shortwave radio emmiter?

I realize that this question might be rather stupid, since I understand nothing about the inner workings of phones and radios. Still, I was wondering if an app existed that could turn a smartphone into an emergency radio, for instance if you are lost outside of network range or if the network itself fails due to some disaster. I have an Android phone, kind you, but the question was more theoretical in nature. I am simply curious.Are there any apps to turn a smartphone into a walkie-talkie or shortwave radio emmiter?
no, there is not, cellphones are made to transmit on a fixed frequency for the service (usually 800/1900 GSM) if you want to be able to transmit you'd have to modify the inside of the phone plus reprogram it to work like a radio. It would take you a lot of time and maybe money.



If you want a radio thought you get CB radios, which don't cost much or frs/gmrs walkie talkies (less effective though)



If you want to use shortwave other than CB or GMRS getting a HAM radio license is something good to look into and not to hard either. With a Ham radio you can talk all over most the US easy.

mbusa