This Moto Mod turns your phone into a walkie-talkie - The Verge
Amazon.com: Walkie Talkie Phone Zello Real PTT 3G/4G Network Mobile Radio 100 Miles Long Range Handheld Smartphone with Wireless WiFi Camera GPS LED Touch Screen Android KSUN ZL20 : Electronics
UNIWA 2.8 Inch Intelligent Mobile Phone 4G Dual Cameras Outdoor Smartphone 320*240px Unlocked Cellphone Walkie Talkie Phone Remote Talkie Speaker for Outdoor Work Travel - Walmart.com
Android Walkie Talkie Two Way Radio WiFi Smartphone Mobile Cell Phone Waterproof | eBay
Walkie-talkie app Zello becomes No. 1 in anticipation of Hurricane Irma - ABC7 Chicago
Microsoft Teams walkie-talkie comes to Android and iOS | Digital Trends
Microsoft Teams turns your phone into a walkie-talkie | Ars Technica