云备份的内容服务器能看到吗？

Can the server see my cloud backups?

看不到。云端备份全程采用端到端加密，上传与存储均为密文，只有你的设备密钥能解密，服务器与任何第三方都无法获知内容。

No. Cloud backups are end-to-end encrypted and stored as ciphertext — only your device keys can decrypt them, and neither the server nor any third party can ever read the contents.

多端同时在线会冲突吗？

Do multiple online devices conflict?

不会冲突。手机、电脑、平板可同时在线，消息由云端实时分发到每一端，会话状态自动保持一致，任一端收发都不会影响其他设备。

No. Your phone, desktop, and tablet can all stay online; the cloud distributes messages to every device in real time and keeps session state consistent, so activity on one never disrupts the others.

换新手机如何恢复聊天记录？

How do I restore chats when switching phones?

在新手机登录同一账号后，加密云备份会自动同步，漫游会话与全部历史聊天记录一键恢复，无需手动导出导入。

After signing into the same account on your new phone, the encrypted cloud backup syncs automatically, restoring roaming sessions and full history in one step — no manual export or import.

离线消息会丢吗？

Will offline messages be lost?

不会。设备离线期间的消息会暂存于云端并加密保存，重新上线后自动补推同步，保证消息完整不遗漏。

No. Messages received while a device is offline are held securely in the cloud and delivered automatically upon reconnecting, so nothing is ever missed.

如何将数据部署在自己的服务器？

How can I deploy my data on my own server?

支持私有云部署，可将云端同步服务搭建在自有服务器上，数据自主管理、全程密文存储，实现真正意义上的数据主权。

Private cloud deployment lets you host the sync service on your own servers with fully managed, encrypted-at-rest data — true data sovereignty for you or your organization.