iOS 18 Bug in Messages App Causes Crashes, Data Loss

Apple’s latest software update, iOS 18, introduces exciting features, but unfortunately, it also comes with a bug in the Messages app that can cause repeated crashes and potential data loss. This issue appears when replying to a shared Apple Watch face in a threaded conversation within Messages. While a fix from Apple is expected, here’s what you can do to avoid triggering the bug and prevent losing important messages and attachments.

Understanding the iOS 18 Messages Bug

The iOS 18 bug in Messages affects users when engaging with threaded conversations that include shared Apple Watch faces. Here’s how the bug manifests:

  • When someone shares an Apple Watch face from watchOS, replying within the thread triggers repeated crashes of the Messages app.
  • This issue impacts both users in the conversation, rendering the thread unusable until a drastic fix is applied.

Key Insight: To avoid this problem, do not reply in a thread after receiving a shared Apple Watch face.

How to Avoid the iOS 18 Messages Crash Bug

To prevent triggering this iMessage crash bug, follow these guidelines:

  • Avoid replying to any shared Apple Watch face in a threaded message.
  • If someone shares a watch face, reply outside the thread or do not respond at all until a fix is issued.
  • Turn off thread replies temporarily if you frequently engage in Apple Watch-related conversations.

What Happens When the Bug Occurs?

If the bug is triggered, the following issues may arise:

  • Messages will repeatedly crash when attempting to open the affected conversation.
  • Other conversations may also become difficult to manage due to the crashes.
  • This bug is triggered specifically when replying in a thread to a shared Apple Watch face. Replying directly or outside the thread may not cause the crash.

Important note: Once triggered, both users in the conversation will experience the crash, and fixing it may result in data loss.

The Fix: Potential Data Loss

Unfortunately, the only immediate solution to this problem involves deleting the entire conversation:

  • Delete the conversation thread to stop the Messages app from crashing.
  • This will result in losing all chat history, including photos, videos, and attachments that haven’t been backed up or saved elsewhere.

Warning: If you restore the conversation from the recently deleted section in Messages, the bug will re-trigger, causing the app to crash again.

Is a Fix Coming?

Apple is expected to release a patch to fix this issue in an upcoming iOS 18 update:

  • The bug affects multiple devices, including those running iOS 18.1 beta, iPadOS 18.1 beta, and macOS 15.1 beta.
  • Waiting for an official patch will help avoid data loss, but until then, it’s crucial to avoid triggering the bug by not replying to shared Apple Watch faces in a threaded message.

What You Can Do to Protect Your Data

To minimize the risk of data loss:

  • Back up your data regularly using iCloud or other backup services.
  • If the Messages app crashes repeatedly, try force-closing the app and deleting the problematic conversation from another device or through iCloud.
  • Consider avoiding Apple Watch face sharing through Messages until Apple issues a fix.

Tip: If data has already been lost, restoring from a recent backup might help, but users relying on Messages in iCloud may face difficulties recovering specific messages.

Why Does This Bug Happen?

The bug stems from how watchOS and iOS 18 handle the sharing of Apple Watch faces in threaded messages:

  • Apple Watch’s watchOS 11 includes a feature that lets users share personalized watch face configurations through Messages.
  • The problem occurs specifically when replying in a thread that contains a shared watch face, causing the app to crash due to a conflict in how the message is processed.

MacReview’s Take: Stay Alert and Protect Your Data

In the meantime, as we await an official fix from Apple, it’s essential to stay vigilant when using the Messages app on iOS 18. Avoiding replies in threads containing shared Apple Watch faces is a simple precaution that can prevent the app from crashing. Regular data backups are key to ensuring that your important conversations, attachments, and memories are safe from potential loss. Finally, spread the word to others who may be unaware of the bug—helping them avoid the frustration of losing valuable data. With these steps, you can safely navigate this issue until Apple resolves it in future updates.

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