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能否通过 Signal 发送短信/彩信？

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Android

Signal is removing SMS support in Android, which we announced here. To move SMS to another messaging app, follow steps here.

Here, we review the reasons we chose to remove SMS. We did not make this choice lightly, but we do believe it is necessary to ensure that Signal meets the highest privacy standards for the future.

  1. SMS is not secure or private, and that means it's fundamentally not compatible with Signal. SMS sends your messages in the clear, so your telecom or anyone snooping on your traffic could read them. Not all people understand the difference between a Signal message and an SMS message, and this led to potentially dangerous incidents where people sent messages they thought were private via SMS.

  2. SMS is not used much beyond the US and a few other western countries, and its use is declining.

  3. Signal does not control delivery of SMS and can not prevent spam being sent via SMS. In the US, leading up to elections, unwanted SMS spam was very common, and led to confusion and a surge in complaints to Signal.

  4. SMS messages are very expensive in many parts of the world. This resulted in many people getting huge bills for SMS messages sent from Signal that they thought were Signal messages.

  5. Proper SMS support takes a lot of time and labor. Signal has to support millions of devices running dozens of versions of Android. Now multiply that by the hundreds of cell carriers running an old and buggy protocol, and the scope and extent of the bugs and problems people encountered in the process of sending SMS messages begins to be clear.

  6. SMS is an old and degraded protocol, with many bugs. Remember that incident a few years ago in which everyone got old Valentine’s SMS messages delivered 9 months later? This was due to an SMS protocol bug. This is one of a host of problems that Signal can’t remedy, and that affect people who use SMS via Signal.

  7. Google is introducing RCS, a new messaging protocol set to displace SMS. The introduction of RCS is making it more and more difficult to maintain a third party SMS app. Currently, SMS messages are being dropped, and other bugs are occurring more frequently due to collisions between SMS and RCS. And there is no API that would allow Signal to integrate RCS.

  8. Offering SMS support was only possible on Android. iOS does not allow third party SMS clients. This meant that our iOS and Desktop clients were not in sync with Android.

Move SMS

我如何将短信转移到新的默认短信应用？

  1. 将短信消息导出 Signal。
    • 在 Signal 中点击您的个人资料 profile_avatar.png > 聊天 > 短信和彩信 > 导出短信消息。
    • 仅可导出到另一款短信应用。
  2. 移除短信消息以清理您的存储空间。
    • 在 Signal 中点击您的个人资料 profile_avatar.png > 聊天 > 短信和彩信 > 移除短信消息。
  3. 将另一款短信应用选作默认应用。
    • 在 Signal 中点击您的个人资料 profile_avatar.png > 聊天 > 短信和彩信 > 用作默认短信应用 > 按照操作系统的提示选择一个 Signal 以外的短信应用。
    • 短信消息仅可导出到另一款短信应用。
    • 短信消息可能需要数分钟才会显示在另一款默认短信应用中。

导出后我应该怎么做？

  1. 按上述操作移除短信消息以清理您的存储空间。
  2. 确认 Signal 已不再设为您的默认短信应用。

为什么系统显示移除短信消息，而不是显示导出？

  1. 您已导出短信消息。
  2. 点击移除短信消息以清理您的存储空间。
  3. 选择另一款默认短信应用以查看这些消息。

我如果没找到导出短信选项该怎么办？

  1. 确认您使用的是 Signal Android v5.53.7 或更新版本。
  2. 确认 Signal 中有短信消息。

我如果没找到移除短信选项该怎么办？

  1. 确认您使用的是 Signal Android v5.53.7 或更新版本。
  2. 确认您未收到或发送任何*新*短信。
  3. 再次导出。

我如果在 “Signal 设置” > “聊天”中没看到短信和彩信列出来该怎么办？

您已完成操作。您已完成导出，并已切换到新的默认短信应用。

我如何切换到另一个默认的短信/彩信应用？

在 Signal 中点击您的个人资料 profile_avatar.png > 聊天 > 短信和彩信 > 用作默认短信应用 > 按照操作系统的提示选择一个 Signal 以外的短信应用。

我如何发送不安全的短信/彩信？

请切换到另一个短信/彩信应用。

如果我需要帮助该怎么做？

在 Signal 中点击您的个人资料 profile_avatar.png > 帮助 > 联系我们 > 通过电子邮件将详情告知我们。

 

iOS

不能。您无法在您的 iPhone、iPod Touch 或 iPad 上通过 Signal 收发不安全的短信/彩信。通过 iOS 版 Signal 收发的所有通信均是私密通信。Apple 不支持其他应用替代默认的短信/消息应用。

 

Desktop

否。Signal Desktop 无法收发不安全的 SMS/MMS 消息，仅可发送或接收 Signal 消息。我们想要鼓励用户远离不安全的传统协议。

作为独立的客户端，桌面应用可正常工作，无论移动设备是否出现或在线。为了使用完整的功能，需在手机上安装 Signal，如 管理已屏蔽聊天、已读回执、已关联设备、等等。

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