Is your Samsung Galaxy S21, S21+, or S21 Ultra having network problems? Mobile data and Wi-Fi connectivity problems and poor mobile network reception are among the most frequently encountered network issues by users who reported this problem.
But there’s need to worry as we’ve made a list of tried-and-true methods that should help you get back online in no time. You can try the 9 fixes we listed below to help you fix your network connectivity troubles in about 15 minutes!
| Difficulty | Easy ●○○○○ |
|---|---|
| Duration | 3 – 15 minutes |
| Things You Need | Samsung Galaxy S21, S21+, or S21 Ultra |
1. Turn airplane mode on and off.
| Difficulty | Very Easy ●○○○○ |
| Number of Steps | 3 |
| Duration | 10 seconds |
To use the Airplane Mode fix, toggle the setting to “On” for a few seconds before switching it back to “Off”. By doing so, you will eliminate any network security issues that may have been present on your device before.
Here are step-by-step instructions on how to toggle the Airplane Mode:
- Access the Settings menu.
- Tap on Connections.
- To activate Airplane Mode, select it from the menu and then toggle the switch on and off for a few seconds.
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Another way to access the airplane mode is from your Home Screen.
- On your Home Screen, swipe down from the top of the screen to see multiple buttons
- From there, you’ll see the Airplane Mode button without having to go into your Settings App
- Simply tap on it to enter Airplane mode and give it around 15 to 30 seconds
- Tap on the Airplane button once again to exit Airplane mode
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2. Forget and reconnect to the network.
This is a quick and easy solution to the Wi-Fi problem. By disconnecting from and reconnecting to a wireless network, you are resetting the network’s settings, which can fix any configuration mistakes you may have made.
Here’s what you need to do to forget and then rejoin a Wi-Fi network:
Step 1: On the home screen, swipe down and then tap on Wi-Fi. |
Step 2: Choose the Network that you are connected to. |
Step 3: Tap on Forget. |
Step 4: Now go back to Settings -> Connections -> Wi-Fi, reconnect to the network, and check if the problem resolves. |
3. Toggle the SIM card on and off.
If your mobile data or network isn’t working, turning off your SIM and back on again may help. Here are the steps you need to take to disable and then activate your SIM card:
- Go to Settings
- Tap on Connections
- Tap on SIM card manager
- Tap on either SIM 1 or SIM 2 to toggle the switch off for a few seconds and then turn it back on again.
4. Disable 5G connection.
There is no point in setting your phone to use 5G if you are stuck with a carrier or in a location where 5G is unavailable. If you’re having trouble, disabling 5G might help.
To stop using 5G, try these steps.
- Go to Settings
- Tap on Connections
- Tap on Mobile networks
- Tap on Network mode
- Select LTE/3G/2G instead of 5G/LTE/3G/2G
5. Reboot your phone and router.
Random software glitches can also cause problems with your network connection in your phone or router. First, try restarting your phone and router to see if that helps.
Here are the steps you need to take to restart your phone:
To bring up the Power Menu, press and hold the side button while simultaneously pressing the volume down key.
- Select Power Off or Restart from the Power Menu.
- If your Wi-Fi router/modem is acting up, you can restart it by unplugging its power supply, waiting 10 to 20 seconds, and then plugging it back in.
6. Reset network settings.
Resetting the network settings could fix the issue if an incorrect network configuration is to blame. The following steps will help you reset your network’s configuration:
- Go to Settings
- Tap on General management
- Tap on Reset
- Tap on Reset network settings
- Tap on the Reset settings button
- Type in the passcode if prompted
- Tap Reset to confirm the reset
7. Update your phone’s software.
An update to the software could solve the connectivity issue if it is caused by a bug. Follow these steps to ensure your software is up to date and install any necessary patches.
- Go to Settings
- Tap on Software update
- Then tap on Download and install to download and install the update.
The update may take around five to fifteen minutes depending on the technicalities. Once it’s done try to access your Wi-Fi and Data connectivity.
8. Clean up the system’s temporary cache.
Network issues are just one of many that can result from a corrupted system cache partition. If you’re experiencing issues with your network connection, try clearing the cache partition.
Follow these steps to purge the system’s cache partition:
Step 1: Switch off your phone. |
| Step 2: Connect your phone to the computer using a USB cable. Wait until your phone tells you it’s charging. |
| Step 3: Hold down the Volume Up and Power buttons at the same time. |
Step 4: Keep pressing and holding both keys until the Android Recovery menu appears. |
Step 5: Press the Volume down key and find the Wipe cache partition option. Select by pressing the Power key. |
Step 6: Press the Volume-Down key to highlight Yes, then press the Power key to choose. When the process is finished, the Reboot system is now highlighted. |
| Step 7: To restart the device, press the Power button. |
9. Factory reset your phone.
A factory reset is the last resort if none of the above methods work. You should back up your system to avoid losing your data or contacts.
These are the procedures to follow if you need to reset your device to factory settings:
| Step 1: Turn off your phone . . |
| Step 2: Connect your phone to the PC via USB. Wait until the message shows your phone is being charged. |
| Step 3: Press and hold the Volume Up key and the Power key. Continue to hold both keys until Android Recovery menu options appear. |
Step 6: Press the Volume down key and navigate to Wipe Data/Factory Reset. Press Power key to select. . |
Step 7: Press the Volume down key to highlight Factory data reset, then press the Power key to select. |
Step 8: When the reset process is complete, Reboot system now is highlighted. Press the Power key to restart the device. |
Galaxy S21 Mobile Data and Wifi Issues: What if it’s a hardware issue?
It may be a hardware issue if you’ve tried everything on this page and still can’t get it to work.
Connectivity issues are a very unusual problem for smartphones. Still, it does occur, especially on older models or brand-new handsets with malfunctioning Wi-Fi-related hardware.
You can take your phone to a certified repair shop staffed by experts; doing so will not void the warranty on the device. Consider carefully before opting for a cheaper and quicker fix from a third-party service center that’s not covered by the manufacturer’s warranty.
In addition to invalidating the warranty, attempting a do-it-yourself repair will likely result in further damage to your unit.
FAQs about Samsung Galaxy S21, S21+ or S21 Ultra Mobile Data/Wi-Fi Issues
How do I get my mobile data to function with my WiFi?
Launch the Settings app and select Network & Internet or Connections to access your network settings. Device-specific variations in these menu selections are possible.
Turn off WiFi and use mobile data to see if that makes a difference. If it isn’t, try switching to WiFi instead of mobile data.
Why does my WiFi and mobile data keep disconnecting?
Here are a couple of factors that may be hindering your Wi-Fi or Data connectivity:
- The internet might be down.
- Your phone may need to restart.
- You could be too far from the router.
- There might be something blocking the connection.
- Your phone might be picking up interference from other networks.
How Many Devices Can I Connect to My WiFi Network?
Most wireless devices can connect to your WiFi network from a single access point, which can connect up to 255 devices at once.
How do I make sure my mobile data doesn’t stop working?
Go to your phone’s settings and then scroll down to networks and connections to reset your mobile network settings. If you tap it and then choose the reset button, the network settings will return to how they were.
