How to Fix Galaxy S26 No Service After Update

Galaxy S26 No Service After Update usually happens when the phone loses carrier registration, the SIM or eSIM profile fails to reload, or the update corrupts mobile network settings.

For related help, also see How to Fix Galaxy S26 Mobile Data Not Working After Update, How to Fix Galaxy S26 Mobile Hotspot Not Working After Update, How to Fix Galaxy S26 Bluetooth Not Working After Update, and the Galaxy S26 hub.

Fix #1: Restart the phone and toggle Airplane mode

This forces the modem to reconnect to the carrier network.

1. Restart the Galaxy S26.
2. Enable Airplane mode for 15 seconds.
3. Disable it and wait for signal bars to return.

Fix #2: Check SIM manager and line status

Your SIM or eSIM may be disabled or stuck after the update.

1. Open Settings > Connections > SIM manager.
2. Confirm your main line is enabled.
3. If you use a physical SIM, reseat it carefully.

Fix #3: Reset network settings

This clears damaged carrier settings without deleting personal content.

1. Open Settings > General management > Reset.
2. Tap Reset network settings.
3. Reconnect and check for service again.

Fix #4: Contact the carrier for provisioning refresh

If the line profile itself is stuck, only the carrier can fully refresh it.

1. Ask the carrier to verify there is no outage.
2. Request a line reprovision or eSIM refresh.
3. Install any newer Samsung software patch available after that.

If your Galaxy S26 still has no service after all of the steps above, test another SIM if possible. That helps confirm whether the issue is with the line profile or the phone hardware.