If you are seeing this notification repeatedly, you can usually resolve it through the following steps:
If the issue persists, you may need to reset your network settings or manually verify your APN configuration via your carrier's support page (e.g., Koodo or Public Mobile ). Is it a Security Risk? new message available for download
How to view/download photos from laptop's app? - Google Help If you are seeing this notification repeatedly, you
Go to Settings > Apps > Messages > Storage and select Clear Cache . This removes temporary glitches without deleting your actual conversations. new message available for download
If you are traveling, check if "Auto-download MMS when roaming" needs to be enabled.