Valerie wants to know if there's any good Walkie Talkie apps for smartphones. Leo says that feature was killed with the smartphone, but Voxer is one that still does it. It even works with the Apple Watch. It's been superceeded with Facebook Messenger and Apple Messages since you can just send audio recordings there now as well. Everyone in the chatroom says Facebook Messenger is the way to go. The downside is that everyone has to use the same one.
push to talk
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.