If your Samsung Galaxy S25 Ultra won't send pictures or group texts, it's usually a quick fix. The most common culprit is a simple setting or a temporary network hiccup. Let's get your multimedia messages working again.
Check Your Mobile Data Connection First
MMS requires mobile data, not just a Wi-Fi signal. Swipe down from the top of your screen to open the Quick Settings panel. Make sure the mobile data icon is turned on and you have a strong signal.
If you're connected to Wi-Fi, try turning it off temporarily. Some networks can interfere with MMS traffic. Sending the message over your cellular connection often solves the problem immediately.
Verify the MMS Settings in Samsung Messages
Open the Samsung Messages app and tap the three-dot menu in the top right. Go to Settings > Multimedia messages.
Here, ensure Auto download is enabled. If you're traveling, you might also need to turn on Roaming auto download. I've found that having these off can sometimes block outgoing MMS, not just incoming ones.
Restart Your Galaxy S25 Ultra
A quick reboot clears out temporary software glitches that can hang up the messaging service. Press and hold the Volume Down button and the Side key together for about ten seconds.
You'll see the Samsung logo appear as the phone restarts. This force restart method is reliable on the S25 Ultra and takes less than a minute.
Clear the Messaging App's Cache
Corrupted temporary files can cause all sorts of app issues. Go to Settings > Apps, then find and select Messages.
Tap Storage and then Clear cache. This won't delete any of your actual messages. If the problem persists, you can try Clear data, but be warned this will erase your entire message history within the app.
Review Your APN Settings
Incorrect Access Point Name settings are a frequent cause of MMS failures. These tell your phone how to connect to your carrier's multimedia service.
Navigate to Settings > Connections > Mobile networks > Access Point Names. Check that the correct APN for your carrier is selected. If you're unsure, a quick call to your carrier's support can get you the right configuration.
Update Your Phone's Software
An outdated system can have bugs that break MMS. Samsung releases updates that often fix these kinds of connectivity issues.
Head to Settings > Software update > Download and install. If an update is available, install it and restart your phone. This is especially important on newer devices like the S25 Ultra running Android 15 and One UI 7.
Reset the Network Settings
This is a more thorough step if nothing else has worked. It will reset all Wi-Fi, Bluetooth, and cellular settings back to default.
Go to Settings > General management > Reset > Reset network settings. Confirm the action. Your phone will restart, and you'll need to reconnect to your Wi-Fi networks and re-pair Bluetooth devices afterward.
Check for Low Storage Space
Your phone needs a bit of free space to process and send multimedia files. If your internal storage is completely full, it can fail silently.
Open Settings > Battery and device care > Storage. Try to free up at least a few hundred megabytes by deleting old downloads or unused apps.
Try Google Messages as an Alternative
Sometimes the issue is specific to the Samsung Messages app. Installing Google Messages from the Play Store can be a great workaround.
After installing, set it as your default messaging app when prompted. Google Messages often has more consistent RCS and MMS performance across different carriers, which is useful if your carrier has phased out support for Samsung's RCS.
