Google语音和Google Duo之间的区别

1. Google语音：
Google语音是一项电话服务，可提供呼叫转移服务和语音邮件服务。它允许用户拥有一个号码并将其转发到多部电话。它由Google在2009年推出。它可用于网络，Android和iOS系统。即使更换电话设备，也可以保留电话号码。它使用跨用户gmail的联系人。它提供许多服务，例如语音邮件，免费短信，呼叫历史记录，呼叫筛选，阻止不需要的呼叫以及将语音转录为语音邮件文本。

2. Google Duo：
Google Duo是一个视频通话移动应用程序，可用于Android和iOS操作系统。也可以通过个人计算机上的Chrome网络浏览器使用它。它使用户能够获得高质量的视频通话服务。它以这样的方式开发，即使id用户的互联网服务缓慢，它也可以正常工作。有实现高安全性的端到端加密。它还可以进行群组视频通话。之前的小组人数为8，但后来扩大到了12。小组由Google LLC推出。它于2016年推出。

Google语音和Google Duo之间的区别：

GOOGLE VOICE	GOOGLE DUO
It is a telephone service that provides call forwarding and voicemail services.	It is a video chat application that provides video calling services.
It was launched in 2009.	It was launched in 2016.
It offers messaging and voice calls.	It offers messaging, voice calls and video calls.
It offers text messaging.	It recently added service for recorded messaging but does not offer text messaging.
It is mainly used for making voice calls.	It is mainly used for making video calls.
It does not require to have gmail signing.	It requires to have gmail signing.
It provides services like call forwarding and voicemail.	It does not provide such services.
It has less number of users.	It has comparatively more number of users.
It does not provide services for group creation.	It provides services for group creation.
Only 2 people can be involved in calls.	Up to 12 people can be involved in calls.