Samsung phone has poor signal & cannot use data or make calls

Poor signal can limit your ability to make and receive calls and connect to the internet. Follow our quick guide for solutions to help with weak or nonexistent phone signal.

Galaxy device’s screen showing a low signal, the call icon, and the internet icon.

Common solutions

Check your service provider settings

  • Make sure your account is active.
  • Ensure you haven't reached any usage limits.
  • Contact your service provider to enquire about potential outages.
  • Verify that you are within your service provider’s coverage area.
    * This can vary by service provider.

 

Change your location

  • If you are outdoors:
    • Move away from tall buildings.
    • Relocate to higher ground.
    • Avoid parking garages.

     

  • If you are indoors:
    • Move near a window.
    • Go outside.

 

Remove accessories
Third-party accessories and cases can interfere with the antenna, even if it claims to boost signal. Also, remove anything that may be plugged into the USB port.

 

Reboot your device
Turning your device off and then back on again will close all running apps and force the phone to reconnect to the network or telecommunications towers.

Check your device’s settings

Quick settings panel. Quick settings panel.

Step 1. Open the Quick settings panel.
Make sure the following are set properly:
* Flight mode should be disabled
* Mobile Data should be enabled

Connections home screen. Connections home screen.

Step 2. Open Settings > Select Connections > Select Mobile networks.

Network operators screen. Network operators screen.

Step 3. Tap Network operators > Tap Select automatically.
* This option may not be supported depending on your carrier.

Reset your SIM Card

Connections home screen. Connections home screen.

Step 1. Open Settings > Tap Connections > Select SIM manager.

SIM manager screen. SIM manager screen.

Step 2. Tap the switch next to SIM 1 > Tap Turn off.

Popup window requesting to turn on SIM 1. Popup window requesting to turn on SIM 1.

Step 3. Tap the switch again > Tap Turn on.

Check the physical SIM card

If you have a physical SIM, verify that the card is correctly inserted and not damaged. If possible, test with another active SIM card. Your service provider may be able to assist with this if you do not have another SIM.

Reset the network settings

General management home screen. General management home screen.

Step 1. Open Settings > Select General management > Tap Reset.

Reset settings screen. Reset settings screen.

Step 2. Select Reset mobile network settings.

Please note: Images used are simulated for illustrative purposes and the actual UI may vary by OS version, service provider, device model, region, etc.

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