• The MMS Proxy field is an IP address only — no http:// prefix
• APN Type must contain mms (e.g.
default,supl,mms)• On Android, save then select the profile before testing
Why MMS requires different settings from mobile data
| Step | Action | What It Fixes |
|---|---|---|
| 1 | Check your network status | Confirms if issue is network-wide |
| 2 | Toggle aeroplane mode on/off | Re-registers SIM on your network |
| 3 | Restart your phone | Clears temporary network errors |
| 4 | Check your network APN settings | Fixes incorrect data configuration |
| 5 | Re-insert SIM card | Fixes poor SIM contact issues |
| 6 | Contact your network support | Resolves account or SIM faults |
MMS (Multimedia Messaging Service) lets you send picture messages, video clips and audio files as text messages. Sending and receiving MMS needs the correct MMSC address, MMS proxy and MMS port configured in the APN settings — without them, messages can fail to send, download, or show as empty boxes.
MMS setup checklist
Picture messaging stops outright if the MMSC uses https:// instead of the required http://
• The MMS Proxy field is an IP address only — no http:// prefix
• APN Type must contain mms (e.g.
default,supl,mms)• On Android, save then select the profile before testing
Configuring MMS on Android for UK networks
Open Settings → Connections → Mobile Networks → Access Point Names, tap the existing APN or create a new one, and fill in the MMSC, MMS Proxy and MMS Port fields with the network's values. Make sure APN Type includes mms (e.g. default,supl,mms), then save and restart.
MMS setup checklist
The MMSC must stay on the plain http:// prefix — accidentally using https:// is what breaks MMS most often
• The MMS Proxy field is an IP address only — no http:// prefix
• APN Type must contain mms (e.g.
default,supl,mms)• On Android, save then select the profile before testing
Configuring MMS on iPhone for UK networks
On iPhone, MMS settings sit within Settings → Mobile Data → Mobile Data Network. Scroll to the MMS section and enter the network's MMSC, MMS Proxy and MMS Max Message Size, then tap back to save.
If the MMS section is missing on iPhone, check Settings → Messages to confirm MMS Messaging is on. A greyed-out toggle usually means the carrier bundle needs updating — contact the network.
MMS setup checklist
MMS won't work if the MMSC ends up on https:// by mistake — it needs the plain http:// prefix
Testing MMS after updating settings
MMS sending failures often mean mobile data isn't on, or the MMSC, proxy or APN type is misconfigured — verify all three.
If the picture won't download, tap it manually, verify mobile data, and check the app for an Auto-retrieve MMS setting.
Blurry images typically point to sender-side MMS compression — WhatsApp or iMessage usually handle photos more clearly.
Troubleshooting checklist
These follow on from each other — keep moving if one doesn't help
MMS on your mobile network vs iMessage/WhatsApp (MMS Not Sending on iPhone)
MMS's small size cap (300KB-1MB) means heavy compression. Consider iMessage, WhatsApp or RCS-enabled Google Messages, which use data instead of MMS.