来尝试一种别样的通讯体验吧。Signal 不仅提供各种常见的功能，还尤为注重隐私安全。 For those who've selected to need admin approval right before persons can be a part of a connect with, you will see requests to join the decision which you can approve or decrease. It's also possible to get rid of folks from calls and optionally block them in https://www-signal.com/