The Galaxy A series of smartphones have long established themselves as reliable mid-range devices, and the model Samsung Galaxy A31 was no exception. To fully utilize the operating system Android and all pre-installed services Google It's critical to ensure a stable internet connection. Without it, updating apps, syncing contacts, or navigating maps is impossible.
The process of setting up a wireless module in the shell One UI from the company Samsung While the interface is extremely simplified and intuitive, users may encounter difficulties entering passwords or selecting frequency bands. Often, the problem lies not with the device itself, but with the nuances of the router's operation or the data entered. In this article, we'll cover all connection steps in detail, as well as troubleshooting common errors.
Before proceeding with specific steps, make sure the appropriate communication module is activated on your device. Unlike desktop computers, mobile devices allow you to control radio modules through the notification shade, significantly speeding up the process. Below, we'll cover a standard procedure that works in most situations.
Basic wireless setup
The first step is to activate the wireless network. To do this, unlock the screen and swipe down from the top to open the Quick Settings panel. Find the wireless network icon and tap it until it lights up. This will initiate a search for available access points within range.
If you want more detailed information about available networks or want to connect to a hidden network, it's best to go to the full settings menu. To do this, tap and hold the icon. Wi-Fi or take the path Settings → Connections → Wi-FiThe list that opens will display all detected signals, indicating their power level and encryption type.
Select the desired network from the list by swiping. If the network is open, the connection will be established automatically. If the network is secured, a dialog box will appear asking you to enter the security key. It's important to be case-sensitive here, as passwords are case-sensitive.
After you enter your password, the system will check its accuracy. Successful authorization is indicated by the appearance of the "Connected" message under the network name and the corresponding icon in the status bar. Now your Samsung Galaxy A31 ready to exchange data with the outside world.
Connecting to hidden and secure networks
Not all wireless networks broadcast their network name (SSID) openly. This is done by administrators to enhance security and reduce the network's visibility to unauthorized devices. To connect to such a network, you must manually enter the network name in the appropriate field.
In the network selection menu, scroll down to the very bottom of the list and select "Add Network." In the window that opens, enter the exact name your administrator provided in the "Network Name (SSID)" field. Pay attention to spaces and special characters—they must match perfectly.
- 🔒 In the "Security" field, select the encryption type used by your router (most often it is WPA/WPA2-Personal).
- 📝 Enter your password in the appropriate field, observing the case of letters and numbers.
- 👁️ Click the eye icon to visually check the entered password before sending.
- 💾 Click the "Save" button to apply the settings.
⚠️ Note: If you don't know the encryption type, try selecting "Auto" or "Any." However, for hidden networks, administrators often use specific security settings that may not be automatically detected.
After saving the settings, the phone will attempt to find the network with the specified name. If the access point is within range and the details are entered correctly, the connection will be established. In the future, the device will be remembered and will connect automatically when detected.
Works with 2.4 GHz and 5 GHz bands
Modern routers often operate in two frequency ranges: 2.4 GHz and 5 GHz Model Samsung A31 Supports both standards, providing connection flexibility. However, the choice of band can significantly impact connection speed and stability.
The 2.4 GHz band has a longer range and penetrates walls better, but it's often congested by neighboring routers and household appliances. The 5 GHz band offers higher data transfer rates, but has a shorter range and is less effective at penetrating obstacles.
In most cases, your smartphone automatically selects the optimal frequency. However, if your router broadcasts networks with the same name (SSID) for both bands, you won't be able to force the frequency selection through the standard menu. To force switching, you may need to separate the network names in the router settings.
| Characteristic | 2.4 GHz | 5 GHz |
|---|---|---|
| Transfer speed | Up to 150-300 Mbps | Up to 867 Mbps and higher |
| Range of action | High | Average |
| Penetration ability | Good | Low |
| Noisiness | High | Low |
You can check your current frequency in the advanced connection settings. Click the gear icon next to your active network name and look for "Frequency" or "Connection Speed." This will help you diagnose speed issues.
Managing saved networks
Your Samsung Galaxy A31 Remembers all the networks you've ever connected to. Over time, this list can become too large, or you might have changed the router password, causing connection errors. In such cases, you need to manage the list of saved profiles.
To remove an unnecessary network, go to the menu Settings → Connections → Wi-FiClick the three dots in the upper right corner of the screen and select "Manage Networks." This displays a complete list of all saved profiles.
- 🗑️ To delete a network, tap on it and select "Delete" or "Forget".
- 🔄 To reconnect, simply select the network from the general list again and enter the new password.
- 📵 Disabling the auto-connect feature will prevent you from connecting to public hotspots without your knowledge.
Clearing the list of saved networks can also help if your phone is stuck trying to connect to an old profile. After deleting the profile, the system will start searching again, as if you were seeing the network for the first time.
☑️ Check before deleting a network
Network diagnostics and reset
Sometimes, a phone may detect a network but not connect, or the connection may be constantly dropped. In these situations, standard methods may not help, and deeper intervention into the system settings is required. Android.
The first step should always be to reboot your router and your smartphone. This simple action resolves up to 80% of temporary software issues. If the problem persists, try resetting your network settings.
To do this, follow the path Settings → General Settings → Reset → Reset Network SettingsPlease note that this action will delete all saved Wi-Fi passwords, Bluetooth settings, and mobile networks, returning them to factory defaults.
⚠️ Note: Resetting network settings will not delete your personal files, photos, or apps. However, you will have to re-enter passwords for all Wi-Fi networks you use.
After the reset, the phone will reboot. Try connecting to the network again. If this doesn't help, the issue may be due to incompatible security protocols or a hardware fault with the module.
Advanced settings and MAC address
In corporate networks or networks with filtering, binding by MAC addressEach network device has a unique identifier. In modern versions Android To enhance privacy, a randomized MAC address is used by default for each network.
If the router is configured to work only with certain devices, randomization may interfere with the connection. In this case, you need to switch to using the device's factory MAC address. This can be done in the specific network's menu.
Click the gear next to the network name (or go to the network settings before connecting), find "MAC Address Type" or "MAC Address Privacy" and select "Use Device MAC Address".
Where can I find my MAC address?
The factory MAC address of your Samsung A31 can be found on a sticker under the back cover (if the battery is removable) or in the menu Settings → About phone → General information. It looks like a set of 12 characters (numbers and letters AF).
Changing this setting requires you to re-enter your password. After switching, the router will see your phone as a new device with a permanent ID, which will solve the access issue on filtered networks.
Frequently Asked Questions (FAQ)
Why doesn't my Samsung A31 see the Wi-Fi network, even though other devices connect?
This could be because the router is operating on a channel that isn't supported in your region, or the phone is too far away. Also, try rebooting the router. Sometimes switching the frequency band in the router settings from 5 GHz to 2.4 GHz helps, as the latter has better compatibility with older standards.
How do I find the password for a saved network on a Samsung A31?
In modern versions of One UI (Android 10 and above), you can view the password for a saved network by tapping the gear icon next to the active network and selecting the "Share" button or QR code. The password will be listed below the QR code, or it can be scanned on another phone.
My phone says "Obtaining IP address..." and won't connect. What should I do?
This means the router can't assign an address to your device. Try changing the IP settings on your phone's Wi-Fi settings from DHCP to Static and manually entering the address (e.g., 192.168.1.150) if you know the gateway address. A simple router restart often resolves the issue.
Can a case interfere with Wi-Fi reception on the Galaxy A31?
Yes, cases with metal inserts, magnetic closures, or thick material can block the antenna located at the top or bottom of the case. If the signal is weak, try removing the case and checking the connection.