According to a report by 9to5mac, the API "Push to Talk" allows developers to add a walkie-talkie to their iOS devices. With this, audio messages can be sent and played in real time with a tap of a button, even if an app with this capability is running in the background.
Users will be able to see communication at the top of the screen, and the app icon as well as the name of the person communicating will be displayed on the top. Push to Talk is reportedly suitable for individuals as well as group conversations. It is also possible to reply in real time with audio or leave the conversation. WatchOS 5.
The second approach comes from MacRumors in which reports that iOS will allow an eSIM to be transferred between iPhones via Bluetooth. This capability can be accessed in the Settings app on an iPhone running iOS 16, which is unlocked, and the other iPhone should have Bluetooth enabled, as well as this feature being running iOS 16. However, it requires carriers to support the feature.