Turn your phone or tablet into a walkie talkie with this lightning fast free PTT (Push-To-Talk) radio app. Talk to your contacts privately or join public channels to engage in a hot debate. Zello features: • Real-time streaming, high-quality voice • Contacts availability and text status • Public and private channels for up to 6000 users • Option to map hardware PTT (Push-To-Talk) button • Bluetooth headset support (selected phones) • Voice history • Call alert • Images • Push notifications • Live location tracking (available with Zello Work service only) • Works over WiFi, 2G, 3G, or 4G mobile data Zello uses proprietary low-latency push-to-talk protocol and is not interoperable with Voxer, Sprint Direct Connect or AT&T Enhanced PTT. Zello Android client supports free public service, ZelloWork cloud service, and private Zello Enterprise Server. We are working hard to improve the app so please expect frequent updates. If you have questions or issues send us an em...