How to Use Zello Groups & Channels Zello is the live-voice communications app of choice for a growing number of people and businesses. Over 125 million users have downloaded the free Zello push-to-talk (PTT) walkie-talkie app since 2012. Zello is versatile and packed with features that can be used for a wide range of activities involving one-on-one, group, or channel communications. One-on-one tal...
