The MetroPCS ChatLINK service is now available. MetroPCS ChatLINK is basically an application that allows your non-PTT (push-to-talk) cell phone to work like a PTT handset. For just $5 per month, MetroPCS customers will be able to use their phone like a walkie-talkie. The MetroPCS ChatLINK will work like this: your friend with a PTT enabled phone calls