What's a good alternative to Sprint's Push to Talk?

Episode 934 (2:32:37)

Enrique from San Diego, CA

Enrique has been using Sprint's Push to Talk feature from the US to Mexico, but it's being discontinued and he needs an alternative. Sprint will be replacing Nextel PTT with a version using LTE, but that's still just on the horizon.

Leo suggests looking for an app that will take it's place on a smartphone. There's an app called Zello (iOS). It's also available on Android, Blackberry, and even PC. Enrique may even wind up liking it more.