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。 In the event you've chosen to involve admin approval just before people can be part of a phone, you'll see requests to affix the decision which you'll approve or decline. You may as well get rid of persons from calls and optionally block them with the contact to https://www-signal.com/