How to Fix Galaxy S25 No Service After Update
Galaxy S25 No Service After Update usually means the phone failed to re-register on the carrier network, the SIM or eSIM profile did not reload correctly, or network settings were damaged during the update.
For related help, also see How to Fix Galaxy S25 Mobile Data Not Working After Update, How to Fix Galaxy S25 WiFi Keeps Disconnecting After Update, How to Fix Galaxy S25 Bluetooth Not Working After Update, and the Galaxy S25 hub.
Fix #1: Restart the phone and toggle Airplane mode
A quick radio reset is often enough to force the Galaxy S25 back onto the network.
- Restart the Galaxy S25.
- Turn Airplane mode on for 15 seconds.
- Turn Airplane mode off and wait up to one minute for service bars to return.
Fix #2: Check SIM or eSIM status
The update may have interrupted your line profile.
- Open Settings > Connections > SIM manager.
- Confirm your SIM or eSIM line is enabled.
- If you use a physical SIM, remove and reseat it carefully.
Fix #3: Reset network settings
This clears broken carrier and radio configuration without deleting personal files.
- Open Settings > General management > Reset.
- Tap Reset network settings.
- Reconnect and check if signal comes back.
Fix #4: Check for carrier or software updates
Sometimes the next patch or a carrier profile refresh fixes post-update service loss.
- Open Settings > Software update.
- Install any newer update available.
- Contact your carrier to confirm there is no line provisioning issue or outage.
If your Galaxy S25 still shows no service after these steps, contact your carrier to refresh the line and replace the SIM if needed. Persistent no-service problems after an update can also point to a radio hardware fault.