How to Troubleshoot Samsung Galaxy A15 4G/5G Wi-Fi Not Working SM-A556E?

If you’re experiencing Wi-Fi issues on your Samsung Galaxy A15 4G/5G (model SM-A556E), don’t worry—there are several steps you can take to troubleshoot and resolve the problem. The Galaxy A15, equipped with Wi-Fi 802.11 a/b/g/n/ac and dual-band support, is generally reliable, but various factors can interfere with wireless connectivity. These issues can stem from software glitches, router problems, or network settings. By systematically addressing these potential causes, you can often restore your device’s Wi-Fi functionality. This guide will walk you through several methods to identify and fix the underlying issues, ensuring your Galaxy A15 connects seamlessly to your Wi-Fi network.

How to Fix Samsung Galaxy A15 4G/5G Wi-Fi Not Working? (SM-A556E)

Due to the cost of mobile data, We can’t always stick with it. We rely on Wi-Fi networks whenever we get free at work or home. So, the Wi-Fi not working on our Samsung Galaxy A15 4G/5G will affect our daily usage. Below, I will mention some fixed methods that help resolve the issue. Based on the success/failure, choose the methods one by one. I assume you know there are no issues with your Wi-Fi network, and everything is right from the router side.

1. Check you are in the correct Wi-Fi network

It can happen when you have more than one Wi-Fi network in your house; sometimes, the No Internet Router connection may affect your Wi-Fi. It is better to check whether you are using the correct system.

• Go to Settings>Network and Internet.

• Then Select Wi-Fi.

• Check the Wi-Fi name of your connection.

2. Check Samsung Galaxy A15 4G/5G Wi-Fi Coverage strength using Dial Pad and Settings

You can’t connect with your Wi-Fi when you have weak coverage strength or a better signal but a low transmission speed. It is better to check both movement and transmission speed. Your current rate should be 50-100% of your Internet plan speed, and if you have a 100Mbps plan, your connection should be at least 50Mbps.

• Open your Dial pad on your mobile.

• Type “*#*#4636#*#*” or “*#*#4838#*#*.

• You will get the Testing screen. Select “Wi-Fi Information.” and then “Wi-Fi status.”

• Refresh stats to get the current connection details.

• Open your mobile browser and study with random pages to check whether it works. You can also use any apps that work with the data connection. Alternatively, you can also find strength in settings.

• Go to Settings>Network and Internet.

• Then Select Wi-Fi.

• Check the Wi-Fi name you are connected to and choose a gear icon near the Wi-Fi network.

• Select Advanced, and you can find the transmission speed.

3. Restart Your Mobile

The restart method may look straightforward and not related to tech troubleshooting. But remember, a restart can resolve most software issues on electronic devices and will work most of the time. Long-press your power button for 10 seconds. This will trigger the power of your mobile, and your mobile will shut down in a few seconds.

4. Samsung Galaxy A15 4G/5G DNS Settings

Like in PC, We can manually change our DNS settings on our mobile to avoid our ISP tracking. Most of the time, It will work well. But sometimes, based on some ISPs, The DNS may not function correctly. When you set up manual DNS, please turn it off in your Settings and try to connect with your Samsung Galaxy A15 4G/5G Wi-Fi connection.

• Go to Settings>Mobile and Network.

• Then Select Mobile Network.

• You will see many Options. Choose Advanced, then “Private DNS.” Select “Off.”

5. Check with VPN Settings

VPN connections are always slow and lag compared with regular networks. It is common in any system. Turning on Always-on VPN settings may sometimes affect your Samsung Galaxy A15 4G/5G Wi-Fi. You can turn off the Always-on VPN in settings. Some of the best free VPNs are available on Android; you can use one if you feel it is functional.

• Go to Settings>Mobile and Network.

• Then Select Mobile Network.

• You will get many Options. Choose Advanced, then “VPN.” Choose VPN profile settings. Then, Turn off the Always-on VPN.

6. Reset Mobile Network settings

Instead of resetting your mobile, We can rest our network settings, which will adjust the default settings for your mobile. If our recent changes affect Wi-Fi, the Rest can help us restore the connection.

• Go to Settings>System.

• Scroll down to the bottom and choose Reset options.

• Select Reset Wi-Fi, mobile, and Bluetooth.

• Then, choose Reset Settings.

7. Reset your Wi-Fi connection Using ADB Commands to Fix your Samsung Galaxy A15 4G/5G

This process may work 50-60% of the time. The chances are less if you use old mid-range mobiles. But we have a Samsung Galaxy A15 4G/5G so that it will work. The OS can still handle background commands, and thus, the ADB commands may work.

Steps

• Download the Samsung USB driver and install it on your PC.

• Also, download the ADB drivers. Install it on your PC.

• Enable USB Debugging Mode and OEM Unlock; you’ll find these options in Settings >>> Developer options. If you didn’t see the developer options on your settings menu, go to about >>> build number. Click on the “Build Number” row about ten times regularly to activate the “Developer Option” on your device.

• Connect your mobile with a PC and unlock your mobile (Screen Lock).

• Open a command prompt as Administrator and type below to check the ADB status.

• adb devices

• The above command will display some code for device detection. If you don’t receive any response, check with the USB cable. If you get a response, move to the below commands.

• adb shell is stop -an android.intent.action.MAIN -n com. Android. settings/.wifi.WifiSettings
  adb shell am start -a Android.intent.action.MAIN -n com. Android.settings/.wifi.WifiSettings
  adb shell input key event 20 & adb shell input key event 23

• You can enter the commands individually or all commands by hitting Enter.

8. Reset Your Samsung Galaxy A15 4G/5G Mobile

Take a complete backup on your mobile. You can do a soft reset or hard reset. Suppose you follow all the methods and still face issues. In that case, you can reset your Samsung Galaxy F15 5 G. To Reset your mobile, Go to settings> System>Reset Options> Reset app preferences/ Factory Reset.

• Soft Reset/App Preference Reset– This option will remove all the custom settings we made and return to the default settings. It will not delete user data.

• Hard Reset/Factory Reset—This will remove all user data. Your mobile OS will become new, like when you purchased it, and you must set everything up from the beginning.

You can also use your mobile recovery to reset when you can’t boot into your Mobile OS.

8.1 Stock Recovery Method

• Switch off your device. This will boot your mobile into Samsung Galaxy A15 4G/5G Recovery mode. To do this, Press and hold the Volume Up, Volume Down, and Power buttons simultaneously for some time. Then, enter the Stock Recovery mode.

• If you don’t use Rooted mobiles, you have Stock Recovery, which your official mobile manufacturer usually provides. If you have stock recovery, you have the direct option of “Wipe Data/Factory Reset.” Navigate to this option and confirm it using the power key button. Remember, it will delete all of your data. So, backup first before the process.

8.2 TWRP Recovery Method

When using Rooted mobiles, you use Stock Recovery or TWRP custom recovery. If you have Stock Recovery, you can use the above process. When you install TWRP on your mobile, follow the steps below.

• The Key combinations will boot your mobile into TWRP Recovery mode.

• On the Home screen, you can find the option “Wipe.” Select the wipe option; you will receive further details. Select “Dalvik, Data, and Internal Storage.” Please don’t select the system; it will wipe your OS. After selecting other choices, swipe to erase the data. When the process is complete, return home and boot into the OS.

9. Regular Software Updates

Mobile Manufacturers are rolling out updates to fix a lot of issues. It makes a lot of effort from their side. If you didn’t utilize the update, they would stop rolling out the updates regularly. So, it is our responsibility to install the updates. Most of the time, your mobile will remind you of these things. Some mobiles download the OTA in the background and ask us for permission to install the updates. After Android 10, Google rolled out important security patch updates via Playstore. So, the process becomes comfortable. The updates have new features, but they also have fixed issues. So, update your mobile frequently.

You may need to check for a newer software update for your device. To do so, follow the steps below. The bug causing your Samsung Galaxy A15 4G/5G device to freeze is primarily fixed in a newer software version, so upgrade to your device’s most recent version. It is wise to take a complete backup before updating your mobile.

• Go to your mobile device settings.

• Scroll down to the About Section and click on the “Software update” option

• Tap the “Download and install” option

• Wait for the search to complete to see if any new updates are available.

• If there’s an updated version, click on the download option to update your device software.

However, if there is no more original version, kindly try other solutions below.

10. Flash the Samsung Galaxy A15 4G/5G stock firmware

When you have tried all the above methods and can’t connect with your Wi-Fi, the final choice for our fix is to flash the Stock firmware of the Samsung Galaxy A15 4G/5G. Since it is a data loss process, I advise you to take a complete backup using Samsung SmartSwicth. You can restore the data once you fix the Wi-Fi issue.

Wrap Up

Nowadays, everything depends on Internet data. Besides checking notifications and chatting, we usually prefer streaming videos using Wi-Fi. Most people use Wi-Fi calling when they can’t get network coverage in their homes, which is necessary to stay connected with other people. So they always stick with Wi-Fi. When Wi-Fi is not working, it is not a pleasant experience. It will limit mobile users to only cameras and gaming when not working. Using the above methods, you can fix the Wi-Fi issue in your Samsung Galaxy A15 4G/5G. Comment below when you have already set your problem in a new way. We will also update our post if we feel it works.

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Selva Ganesh

Selva Ganesh is the Chief Editor of this Blog. He is a Computer Science Engineer, An experienced Android Developer, Professional Blogger with 8+ years in the field. He completed courses about Google News Initiative. He runs Android Infotech which offers Problem Solving Articles around the globe.