How to Fix Galaxy S25 Mobile Data, Call, and Signal Problems

If your Galaxy S25 has no service, weak signal, dropped calls, or mobile data that does not work, the problem may be tied to coverage, your SIM card, or network settings. Try the methods below in order to restore a stable connection.

Method 1: Restart the phone and toggle Airplane Mode

This refreshes the phone’s connection to your carrier.

1. Turn Airplane Mode on.
2. Wait 10 to 15 seconds.
3. Turn Airplane Mode off.
4. Restart the phone.
5. Check signal and mobile data again.

Method 2: Check basic mobile settings

Important network options may have been disabled.

1. Open Settings.
2. Tap Connections.
3. Make sure Mobile data is enabled.
4. Open Mobile networks.
5. Confirm that the correct network mode is selected.

Method 3: Reseat the SIM card

A loose or damaged SIM can cause calling and signal issues.

1. Power the phone off.
2. Remove the SIM tray.
3. Inspect the SIM card for dust or damage.
4. Reinsert it properly.
5. Turn the phone back on.

Method 4: Select the network automatically

Manual network selection can cause service issues in some areas.

1. Open Settings.
2. Tap Connections.
3. Tap Mobile networks.
4. Tap Network operators.
5. Select Automatically.

Method 5: Reset mobile network settings

This can fix broken APN, calling, and mobile data configuration.

1. Open Settings.
2. Tap General management.
3. Tap Reset.
4. Select Reset mobile network settings.
5. Confirm the action.

Method 6: Check for carrier outage or account issue

The problem may be with the carrier rather than the phone.

1. See whether another phone on the same carrier has service.
2. Check your carrier app or website for outages.
3. Verify that your account is active.
4. Contact the carrier if needed.

Method 7: Install updates

Carrier and firmware updates may improve network stability.

1. Open Settings.
2. Tap Software update.
3. Install any pending update.
4. Restart the phone.

Method 8: Factory reset or get support

Use this if every other fix has failed.

1. Back up your data.
2. Perform a factory reset.
3. If the issue remains, contact Samsung or your carrier.