signalapp / signalapp/Signal-Android

Local backup continuously fails

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#14,567 12 comments 0 reactions 0 assignees View on GitHub

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Dominant language
Kotlin
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Description

Guidelines
  • I have searched searched open and closed issues for duplicates
  • I am submitting a bug report for existing functionality that does not work as intended
  • This isn't a feature request or a discussion topic
Bug description

I try to use the local backup feature.
It fails after a few percent, showing the notification "Backup failed", "Your backup contains a very large file that cannot be backed up. Please delete it and create a new backup". Clicking the notification does nothing. Signal provides no way of finding that suppodedly very large file, whatever that may mean.
Also, disabling and re-enabling backups results in the same issue.

Screenshots

Image

Device

Pixel 8

Android version

16

Signal version

7.70.2

Link to debug log

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing local backup on the reported Pixel 8 with Android 16 and Signal 7.70.2, then inspect the backup failure notification and the local backup flow. Done means identifying the supposedly very large file or the failure cause and making local backup complete successfully without the ineffective notification action.

Written by the indexing model from the issue text.

Assessment

Tech stack
android, kotlin
Domain
mobile-dev
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Quiet
Clarity
Needs clarification
Newbie friendliness
38/100

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