Apple disables its walkie-talkie Watch app due to vulnerability The push-to-talk feature will be back as soon as Apple has a fix July 11, 2019 https://www.engadget.com/2019/07/11/apple-walkie-talkie-feature-disabled-vulnerability/
Apple fixes Walkie Talkie app vulnerability in watchOS update July 22, 2019 https://techcrunch.com/2019/07/22/apple-fixes-walkie-talkie-app-vulnerability-in-watchos-update/
Apple reportedly halts peer-to-peer iPhone walkie-talkie project August 26, 2019 https://venturebeat.com/2019/08/26/apple-reportedly-halts-peer-to-peer-iphone-walkie-talkie-project/