Symptoms
- Photo attachment fails to send with an error
- Message sends as text but photo is missing
- MMS works over Wi-Fi calling but not otherwise, or vice versa
- Recipient reports receiving a blank or broken image
Likely causes
- CommonWeak or no mobile data connection (MMS typically requires data, not just cellular signal)MMS uses your data connection even though it's sent alongside SMS.
- CommonMMS settings or APN not configured correctlySimilar to general data settings, MMS has its own configuration that can be wrong after a SIM change.
- PossibleFile size too large for the recipient's carrier limitsSome carriers cap MMS attachment sizes, causing large photos or videos to fail.
- PossibleGroup MMS limitations with a large number of recipientsVery large group texts can exceed MMS size or recipient limits.
What to do
- Confirm you have an active mobile data connection, since MMS typically needs data even on a cellular network.
- Try sending the photo over Wi-Fi if cellular data isn't working, or vice versa.
- Check and, if needed, reset your carrier's MMS/APN settings, often available on their support site.
- Try sending a smaller photo or a lower-resolution version if the original file is very large.
- Restart the phone to refresh its data and messaging connection.
- If it's a group text failing, try sending the photo in a one-on-one conversation to isolate the issue.
When to call a pro
If MMS still fails after confirming data connection and settings, contact your carrier to verify MMS is enabled and properly configured on your line.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.