How to fix no service or signal on a Samsung or Android phone

⚡ Fast fix

• Toggle Airplane Mode. Turn it on for 10 seconds, then off to refresh the network.
• Restart your phone. A reboot forces it to reconnect to nearby towers.
• Reseat the SIM card. Power off, remove the SIM, then insert it firmly again.
• Check for updates. Go to Settings > Software update and install any available updates.

Imagine this—you try to make a call, but your phone won't connect. Instead, it displays a “No Service" message or shows zero signal bars, rendering it basically useless. Talk about aggravating.

Don't worry—at Asurion, we help millions of people troubleshoot, fix, and get the most out of their tech. From breaking a Samsung logo boot loop to showing you how to use Wi-Fi calling, we keep the devices you rely on working all day, every day. Here's our guide to why you're getting a "No Service" message on your Samsung® or Android™ phone, and exactly how to fix it.

Why your phone shows a "No Service" message

If you're getting this message, it means your device's cellular antenna cannot find or communicate with your cellular carrier's local network. This complete drop in connection prevents you from making calls, sending SMS texts, and using mobile data.

Often, it's just a temporary dead zone or a carrier outage in your area. But if the problem persists, here are the 6 most common fixes to get your Android phone back in service.

1. Restart your phone

The easiest and often the most effective way to resolve a "No Service" or signal drop is to restart the device. Doing so will clear out any software glitches that might be interfering with your antenna's performance.

1. Press and hold the Power button (or the Power and Volume Down buttons, depending on your model) to pull up the power menu.
2. Tap Restart, or turn the device completely off, wait 30 seconds, and turn it back on.
3. Check your status bar once it reboots to see if your signal bars have returned.

2. Turn Airplane Mode on and off

If a restart didn't work, try to manually kickstart your connection to your service provider. Turning Airplane Mode on and off severs all wireless connections and forces the phone to search for a new cell tower from scratch.

1. Swipe down from the top of your Home screen to reveal the Quick Settings panel.
2. Tap the Airplane mode icon (it looks like a small airplane) to turn it on. Wait about 10 seconds.
3. Tap it again to turn it off and watch your status bar to see if it reconnects.

3. Manually select your network provider

Usually, your phone automatically detects and connects to your carrier (like Verizon, AT&T, or T-Mobile). Sometimes, a glitch forces it to disconnect, and you have to select the network yourself.

For Samsung Galaxy phones:

1. Go to Settings > Connections > Mobile networks > Network operators.
2. Toggle off Select automatically.
3. A list of available network providers will populate. Select your carrier from the list.

For Google Pixel and other Androids:

1. Go to Settings > Network & internet > SIMs.
2. Scroll down to Automatically select network and toggle it off.
3. Choose your carrier from the manual list.

4. Double-check your SIM card

The data on your Subscriber Identity Module (SIM) card acts as your digital ID badge, telling the local network exactly who you are. If you recently dropped your phone, the physical SIM card may have been dislodged.

(Note: If your phone relies entirely on a digital eSIM—like the newest network models do—you can skip this step).

1. Turn off your phone.
2. Use a SIM ejector tool or a paper clip to pop open the tray. (Not sure how to safely remove it? Check out our guide on how to remove a SIM card).
3. Take the card out, gently blow away any dust, and wipe the gold contacts with a clean microfiber cloth.
4. Reinsert the SIM card so it sits perfectly flat in the tray, and turn your device back on.

5. Update your software

Software updates are crucial for keeping your Android phone running smoothly. If your operating system is outdated, a known bug could be causing your "No Service" error.

1. Connect your phone to a Wi-Fi network (since cellular data won't work).
2. Ensure your phone is plugged in or has at least 50% battery life.
3. Go to Settings > System > System update (or Settings > Software update on Samsung devices).
4. Tap Download and install if an update is available. Your phone will restart a few times during this process.

6. Restore your phone to its factory settings

If you've tried everything above and your carrier has confirmed there are no outages in your area, a factory reset is your last resort. This process wipes your device of all personal data—including apps, saved passwords, and photos—to eradicate deep-seated software corruption.

Because a factory reset is permanent, you must back up your data first, or you will lose it forever. Once your files are safely backed up to the cloud or a computer, follow the detailed steps in our comprehensive guide on how to factory reset your Samsung or Android phone.

FAQ

Why does my phone suddenly say “No Service”?

This usually happens when your phone loses connection to nearby cell towers. It can be caused by poor coverage, a carrier outage, SIM issues, or a temporary software glitch.

Why do I have full bars but still no service?

Signal bars don’t always mean you’re connected to your carrier’s network. Your phone may see a tower but fail to authenticate with your carrier due to SIM errors, account issues, or network congestion.

Can a damaged SIM card cause “No Service”?

Yes. A scratched, bent, or improperly seated SIM card can prevent your phone from connecting to your carrier. If reseating it doesn’t work, your carrier may need to replace it.

When should I contact my carrier?

If you’ve restarted your phone, toggled Airplane Mode, checked your SIM, and updated your software—and you still see “No Service”—it’s time to contact your carrier to rule out outages or account issues.