Hey, looks like you're introducing a cool app!
Literally, the app lets you receive phone notifications via your watch or Bluetooth device, and is especially useful for social platforms like Telegram, Facebook Messenger, Skype, Viber, and Instagram.
When a call comes in, you can answer it directly on your watch, which is super convenient! However, when using Viber, be sure not to ask it for phone rights. To do this, the app needs access to the phone's notifications in order to detect the status of the call.
There are a lot of supported devices: those who have Miband and are using Mi Fitness 3.9.1i or Zepp Life can use this feature.
And all Wear OS devices, Galaxy Tizen devices, and even other devices that support phone notifications.
In short, the Call Bridge app, created by vnapps, is a gem! If you're looking for constant control over your phone, this might be what you're looking for.