Libre Contacts Backup
离线加密的联系人备份工具
新版本 2.7.1
Fixed:
- Restoring a backup no longer crashes on Android 10 and 11, where the phone lacks the newer SIM contacts provider
- Automatic backups can no longer be cancelled silently by an interrupted or overlapping run. If a backup is stopped partway through (slow phone, Doze, or the system reclaiming resources), the next scheduled backup still happens at the usual time
- A slow-to-read SIM card phonebook can no longer delay or derail an automatic backup
- After a device reboot, the automatic schedu
- Restoring a backup no longer crashes on Android 10 and 11, where the phone lacks the newer SIM contacts provider
- Automatic backups can no longer be cancelled silently by an interrupted or overlapping run. If a backup is stopped partway through (slow phone, Doze, or the system reclaiming resources), the next scheduled backup still happens at the usual time
- A slow-to-read SIM card phonebook can no longer delay or derail an automatic backup
- After a device reboot, the automatic schedu
Libre Contacts Backup 是一款原生、自由开源（FLOSS）的 Android 应用，专注于隐私保护与本地优先的联系人备份。无需账号、无需云端、绝不追踪——除非你自己转移备份文件，否则你的联系人数据永远不会离开你的设备。
功能特点：
* 无损备份，完整保留 Contact → RawContact → Data 的层级结构，包括联系人分组
* 每次备份均包含 SIM 卡通讯录；恢复时可将 SIM 联系人写回 SIM 卡、导入设备通讯录，或同时写入两者——在支持多张 SIM 卡（包括 eSIM）的手机上，还可选择写入哪些卡；单卡手机则自动使用该卡
* 可在你选定的时间自动执行本地备份——每日、每周的指定星期几，或每月的指定日期（若当月没有该日期，则在当月最后一天执行）——无需联网
* 单文件 LCB 存档，包含标准的 JSON、VCF、CSV 及规范化导出格式
* 可选的 AES-256-GCM 密码加密（基于 Android Keystore）
* 恢复时能正确合并每个来源联系人，不会把同名的不同联系人误合并
* 支持手动导出为 CSV 和 VCF 格式，CSV 文件可在 Excel 及其他电子表格程序中打开
* 按时间保留——按日、周、月保留你选择数量的最新备份（例如每日 7 份、每周 4 份、每月 3 份），让近期历史保持密集备份，较早的历史逐渐稀疏——或者只保留最近 N 组
Libre Contacts Backup 免费且开源。如果它对你有帮助，你可以支持其开发——捐赠方式请见项目 README 的 Donate 部分：https://librecontactsbackup.ashkanrafiee.com/#donate
功能特点：
* 无损备份，完整保留 Contact → RawContact → Data 的层级结构，包括联系人分组
* 每次备份均包含 SIM 卡通讯录；恢复时可将 SIM 联系人写回 SIM 卡、导入设备通讯录，或同时写入两者——在支持多张 SIM 卡（包括 eSIM）的手机上，还可选择写入哪些卡；单卡手机则自动使用该卡
* 可在你选定的时间自动执行本地备份——每日、每周的指定星期几，或每月的指定日期（若当月没有该日期，则在当月最后一天执行）——无需联网
* 单文件 LCB 存档，包含标准的 JSON、VCF、CSV 及规范化导出格式
* 可选的 AES-256-GCM 密码加密（基于 Android Keystore）
* 恢复时能正确合并每个来源联系人，不会把同名的不同联系人误合并
* 支持手动导出为 CSV 和 VCF 格式，CSV 文件可在 Excel 及其他电子表格程序中打开
* 按时间保留——按日、周、月保留你选择数量的最新备份（例如每日 7 份、每周 4 份、每月 3 份），让近期历史保持密集备份，较早的历史逐渐稀疏——或者只保留最近 N 组
Libre Contacts Backup 免费且开源。如果它对你有帮助，你可以支持其开发——捐赠方式请见项目 README 的 Donate 部分：https://librecontactsbackup.ashkanrafiee.com/#donate
版本
尽管下面提供了 APK 安装包的下载选项，但你应该注意，以这种方式安装将不会收到更新通知，这是一种不太安全的下载方式。 我们建议你安装使用 F-Droid 客户端。
下载 F-Droid-
该版本需要 Android 8.0 及以上版本。
此包由原始开发者构建并签名，并保证对应于此源代码 tarball。
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该版本需要 Android 8.0 及以上版本。
此包由原始开发者构建并签名，并保证对应于此源代码 tarball。
-
该版本需要 Android 8.0 及以上版本。
此包由原始开发者构建并签名，并保证对应于此源代码 tarball。
新版本 2.6.0
Added:
- SIM card phonebook is now captured in every backup — the names and numbers stored on your SIM card are backed up alongside your device contacts
- On restore, choose where SIM contacts go: back to the SIM card, into the device address book, or both
- On phones with more than one SIM (including an eSIM), pick which of the available cards the contacts are written to; on a single-SIM phone it uses that card automatically
- If a SIM write fails (full or unsupported card), entries are restore
- SIM card phonebook is now captured in every backup — the names and numbers stored on your SIM card are backed up alongside your device contacts
- On restore, choose where SIM contacts go: back to the SIM card, into the device address book, or both
- On phones with more than one SIM (including an eSIM), pick which of the available cards the contacts are written to; on a single-SIM phone it uses that card automatically
- If a SIM write fails (full or unsupported card), entries are restore
新版本 2.5.0
Added:
- Retention by age: keep the newest backups of each recent day, week, and month, so your history stays dense for the recent past and thins out further back. One tap lets you choose how much history to keep (last week, month, 3 months, or year), and advanced settings let you pick exact counts per tier — for example 7 daily, 4 weekly, and 3 monthly — or set a tier to 0 to keep nothing from it.
- The backup retention setting now offers two policies: keep the last N backup sets (the previous
- Retention by age: keep the newest backups of each recent day, week, and month, so your history stays dense for the recent past and thins out further back. One tap lets you choose how much history to keep (last week, month, 3 months, or year), and advanced settings let you pick exact counts per tier — for example 7 daily, 4 weekly, and 3 monthly — or set a tier to 0 to keep nothing from it.
- The backup retention setting now offers two policies: keep the last N backup sets (the previous