How to Fix Galaxy S26 Mobile Data, Call, and Signal Problems

If your Galaxy S26 has no service, poor signal, dropped calls, or mobile data that does not work, the issue may be tied to coverage, your SIM card, or network settings. These steps can help restore a stable connection.

Method 1: Restart the phone and toggle Airplane Mode

This refreshes the phone’s connection to your carrier.

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

Method 2: Check basic mobile settings

Important network features may have been disabled.

Open Settings.
Tap Connections.
Make sure Mobile data is enabled.
Open Mobile networks.
Confirm the correct network mode is selected.

Method 3: Reseat the SIM card

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

Power the phone off.
Remove the SIM tray.
Take out the SIM and inspect it.
Reinsert it properly.
Turn the phone back on.

Method 4: Select the network automatically

Manual network selection can create connection problems.

Open Settings.
Tap Connections.
Tap Mobile networks.
Tap Network operators.
Choose Select automatically.

Method 5: Reset mobile network settings

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

Open Settings.
Tap General management.
Tap Reset.
Select Reset mobile network settings.
Confirm the action.

Method 6: Check for carrier outage or account issue

Sometimes the problem is outside the phone.

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

Method 7: Install updates

Carrier and firmware updates may fix connectivity bugs.

Open Settings.
Tap Software update.
Install any available update.
Restart the phone.

Method 8: Factory reset or seek support

Use this when network issues continue after every other fix.

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