Samsung Galaxy S20 Network Issues
If experiencing issues with cellular or WiFi connectivity, mobile hotspot, mobile data reception, or cell signal maintenance, follow the troubleshooting steps below.
- Check your phone's connection settings and network provider for outages or issues.
- Restart your device to ensure all connections are reestablished.
Step 1 | Network Hangup
Phone experiencing network hangups? Try toggling Airplane mode on for 30 seconds.
- Airplane Mode Toggle: Swipe down from top of screen, tap Airplane Icon, wait 30 seconds.
- Tap Airplane Icon again to turn Airplane mode off.
Note: This method usually resolves cellular network issues only; WiFi issues may require forgetting and reconnecting the network.
- (WiFi issues): Open Settings app, select Connections > Wi-Fi.
- Tap gear icon next to network name to open detailed menu, then tap Forget at bottom right.
- Reconnect and reconfigure WiFi settings to resolve issue.
Step 2 | No Data Transmitted From Source
First confirm there's data available: check WiFi and mobile data providers.
- Test WiFi by connecting another device and loading frequently updating pages.
- If issues persist, try resetting modem and router:
- Unplug the modem and router.
- Wait 30 seconds for devices to reset completely.
- Plug in the modem and then router.
- Wait a few seconds for initialization before reconnecting.
If issues persist, contact your internet service provider to check for outages or shutoffs.
- Contact your mobile carrier's support line to check their network status:
- Verizon Support
- AT&T Support
- T-Mobile Support
- Sprint Support
- U.S. Cellular Support
- Cricket Wireless Support
If all else fails, investigate software or component issues with your phone.
Step 3 | Incorrectly Configured Network Settings
Resetting network settings may resolve connection issues caused by recent changes.
- Open the Settings app.
- Select General Management from the settings menu.
- Select Reset from the general management menu.
- Select Reset Network Settings.
- Confirm with the blue Reset Settings button.
Step 4 | Firmware Malfunction
Network connectivity issues may be caused by a software or firmware glitch, which can be resolved without opening up your phone.
- Restart your phone: hold the power button for three seconds and tap restart twice.
If a normal restart doesn't resolve the issue, proceed with caution:
- Perform a factory reset to eliminate software glitches. Note that this will erase all data and settings.
Before performing a factory reset, backup any important data you wish to keep.
- To factory reset your Galaxy S20:
- Settings app: select General Management option.
- Select Reset from the general management menu.
- Scroll to the bottom of the screen and tap Reset.
- Confirm by selecting Delete All button.
Step 5 | Faulty Chipset
Hardware malfunction due to water ingress or impact may cause connectivity issues.
- Replace the motherboard, as all network connection chips reside on it.
- If under warranty, have your carrier replace the motherboard.
For replacement guides:
Step 6 | Related Pages
Try booting the device in Safe Mode by long-pressing on the power button until the logo appears, then release and press it again to see if it boots up.
- Verify the charging port for any signs of damage or corrosion.
- Try a different charger or charge the device via computer.
If still unresponsive, do not attempt to force restart as this may cause further damage.
- Inspect the camera lens for any debris or damage. Clean gently with a soft cloth if necessary.
Avoid applying excessive pressure on the screen, which can cause permanent damage.
- Try pressing and holding the Power + Volume Down buttons simultaneously for at least 10 seconds to force restart.