I know plenty of people who have inadvertently lost their entire messaging history because their phone broke or was lots and they couldn't transfer messages directly from the old phone to the new one. Signal allows you to export backups of messages to a file, but only on Android - the iOS version does not. This is a great feature not only for users who are less technically inclined than the average HN reader, but for any user who doesn't want to go through the tedious process of manually backing up their messages periodically but doesn't want to risk losing their message history if their phone has one unfortunate encounter with gravity.
My only concern reading this is that I hope they don't remove the manual export feature once this is rolled out. I know that that feature has been technically complicated to support, but it's important for users to preserve the option to maintain control over their backups, if they want to manage backups themselves, alongside the option of having a more convenient, automated approach.
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