Images/audio sent from Android not received on iOS #1518

When sending images or voice messages from Android to iOS in a chat, the iOS device does not receive them. iOS→Android media transfer works fine. Text messages work fine in both directions.

Steps to reproduce:

1. Send an image or audio message from an Android device to an iOS device
2. iOS device does not receive the media (no message appears). The message appears as sent in the Android device.

Environment:
Receiving device: iPhone 13 Pro (iOS 18.5)
Sending devices: tested with 2 different Android devices (Google Pixel 10, Xiaomi Pad 7 Pro - both Android 16)
App version: fill in

Additional notes:

• Confirmed with 2 different Android devices as senders, so likely not specific to one Android device.
• iOS→Android media transfer works correctly. Android->Android transfer also worked correctly.
• Have not tested iOS→iOS