What to do when calls disconnect or there’s no network signal on your Galaxy device

Last Update date : Feb 04. 2026

Important Note: The information on this page is for Hong Kong products only. Models, sequences or settings will vary depending on location and/or where the product had been purchased. To be redirected to your local support page please click here.

If your calls disconnect abruptly or there’s no network signal on your Galaxy device, it may be due to a device setting or a carrier related issue. Follow the guide below to inspect your device’s condition.

Before you try the recommendations below, be sure to check if your device's software and related apps are updated to the latest version. To update your mobile device's software, follow these steps:

Step 1. Go to Settings > Software update.

Step 2. Tap on Download and install.

Step 3. Follow the on-screen instructions.

Check your device settings

Device settings may be hindering your ability to make or receive calls. Check if Airplane mode is enabled or if your device is blocking calls from unknown or private numbers.

Turn off Airplane mode

Step 1. Open Settings and tap Connections.

Step 2. If Airplane mode is on, turn it off and check if your connection stabilizes.

turn off the airplane mode

Check if your device is blocking any unknown or private numbers

checking device blocking unknown numbers 1 checking device blocking unknown numbers 1

Step 1. Open the Phone app and Tap More (the three dots in the upper right corner.)

checking device blocking unknown numbers 2 checking device blocking unknown numbers 2

Step 2. Tap Settings.

checking device blocking unknown numbers 3 checking device blocking unknown numbers 3

Step 3. Tap Block numbers.

checking device blocking unknown numbers 4 checking device blocking unknown numbers 4

Step 4. Turn off Block unknown/private numbers and check if you receive calls.

You may need to reset your network settings if your calls disconnect, or your device keeps losing network signal.

reset network settings 1 reset network settings 1

Step 1. Open Settings and tap General management.

reset network settings 2 reset network settings 2

Step 2. Tap Reset.

reset network settings 3 reset network settings 3

Step 3. Tap Reset network settings.

reset network settings 4 reset network settings 4

Step 4. Check the information on the screen and tap Reset settings.

reset network settings 5 reset network settings 5

Step 5. Tap Reset.

Note:

  • Please note that resetting network settings will also reset Wi-Fi, Bluetooth, and other network settings.

Incorrect APN (Access Point Name) settings may interrupt the network connection. Follow the steps below to reconfigure APN settings.

reset network settings 1 reset network settings 1

Step 1. Open Settings and tap Connections.

reset network settings 2 reset network settings 2

Step 2. Tap Mobile networks.

reset network settings 3 reset network settings 3

Step 3. Tap Access Point Names.

reset network settings 4 reset network settings 4

Step 4. Tap More (the three dots) in the upper right corner and tap Reset to default.

reset network settings 5 reset network settings 5

Step 5. Tap Reset to reconfigure APN settings.

The issue may occur when your device is connected to a carrier that you are not signed up for. Follow the steps below to choose your carrier.

reset network settings 1 reset network settings 1

Step 1. Open Settings and tap Connections.

reset network settings 2 reset network settings 2

Step 2. Tap Mobile networks.

reset network settings 3 reset network settings 3

Step 3. Tap Select roaming network.

reset network settings 4 reset network settings 4

Step 4. Turn off Select automatically and choose your carrier.

Note: Device screenshots and menus may vary depending on the device model and software version.

How to use the Samsung Members app

If you are experiencing difficulties with your Samsung mobile, tablet, or wearables, you can send us a question in the Samsung Members app. Find out more about sending an error report.

Learn more

If the above information does not match what your product is showing, you may check the User Manual for your product. If you are unable to solve the problem, please contact us for further assistance.

Related Questions

Thank you for your feedback!

Contact Info

Online

There are a number of a different ways of contacting us via WhatsApp, Live Chat, Email and more
Learn more

Call

Speak to one of our dedicated team of experts
Learn more

Face to face Support

Whether your product is in warranty or out of warranty, we're here to help.
Self-diagnose your Galaxy device Find a support centre

Apps & Services Customer Support


View more

RC01_Static Content : This text is only displayed on the editor page