How to Fix Galaxy S25 No Service After Update

Galaxy S25 No Service After Update usually points to a carrier registration glitch, reset network settings, or a SIM or eSIM profile that did not reload correctly after the update.

Method 1: Restart the phone and toggle Airplane mode

A quick radio reset often reconnects the phone to the carrier network.

Restart the Galaxy S25.
After it boots up, turn Airplane mode on for 10 seconds.
Turn Airplane mode off and wait up to one minute for service bars to return.

Method 2: Reseat the SIM or check eSIM status

Carrier registration can fail if the SIM profile was not reloaded properly after the update.

Open Settings > Connections > SIM manager.
Make sure your main line is enabled.
If you use a physical SIM, power off the phone, reseat the SIM, and turn the phone back on.

Method 3: Reset mobile network settings

This clears bad carrier and radio settings without deleting your apps or personal files.

Open Settings > General management > Reset.
Tap Reset mobile network settings.
Confirm the reset and let the phone reconnect.

Method 4: Select the carrier manually

Manual network selection helps when automatic registration gets stuck after an update.

Open Settings > Connections > Mobile networks > Network operators.
Turn off automatic selection.
Choose your carrier manually, then switch back to automatic if you want.

Method 5: Install carrier and software updates

A carrier settings mismatch can prevent normal LTE or 5G registration.

Go to Settings > Software update > Download and install.
Install any pending update and restart the phone.
Open your carrier app if you have one and check for account or provisioning alerts.

When to get service or support

If your Galaxy S25 still shows no service after all of the steps above, contact your carrier to refresh the line provisioning and check for an outage. Persistent no-service problems after an update can also point to a SIM failure or radio hardware issue.