Apple's Walkie-Talkie Apple Watch App Works Again Following iOS 12.4 and watchOS 5.3 Release - MacRumors
How to use the Apple Watch's Walkie Talkie feature - Android Authority
Walkie Talkie for iPhone and iPad – Walkie Talkie for iPhone and iPad, no Internet required! Works offline. Uses any WiFi network, or its own network mesh if no WiFi present using
The best walkie-talkie apps for Android and iOS | Digital Trends