How to Share Wi-Fi with a Samsung Galaxy A31: 3 Proven Methods + Troubleshooting

Smartphone Samsung Galaxy A31 (model SM-A315F) remains a popular device for distributing mobile internet, despite the release of new models. Its key advantage is support dual SIM card (in versions with DS (in the title), which allows you to use one SIM card for calls and the other exclusively for 4G/5G data. However, many users encounter issues: the hotspot disconnects, slow speeds, or devices fail to connect. In this article, we'll look at All current methods of distributing Wi-Fi taking into account the firmware features One UI 4.1–6.0 (Android 12–14).

It is important to understand that the distribution capabilities depend not only on the phone model, but also on telecom operatorSome tariffs block this function. Modem and access point or limit the speed. For example, MTS And Beeline Basic tariffs may have a limit on traffic for distribution, and Tele2 Sometimes it requires an additional option. Before setting it up, check your plan's terms—it'll save you time.

Method 1: Access point via the settings menu (the most reliable)

This method works on all versions One UI and doesn't require root access. The main advantage is a stable connection and minimal battery drain. The instructions are valid for firmware versions Android 12–14:

Open Settings → Connections → Tethering & portable hotspotHere you will see three options:

• 📶 Mobile hotspot — Wi-Fi distribution (recommended for most cases).
• 🔌 USB modem — connection via cable (needed for PCs without a Wi-Fi adapter).
• 📡 Bluetooth modem — low battery consumption, but low speed (up to 3 Mbps).

Select Mobile hotspot and configure the settings:

1. Turn on the slider Mobile hotspot.
2. Click Tune (or Network name in older versions).
3. Ask network name (SSID) - in Latin, without spaces (for example, SamsungA31_Hotspot).
4. Select security type: WPA2 PSK (optimal balance between security and compatibility).
5. Install password at least 8 characters (use numbers, letters and symbols).
6. In the section Frequency band select 2.4 GHz (for compatibility with older devices) or 5 GHz (for high speed but shorter range).

Mobile Internet is enabled (4G/5G icon in the notification bar)

A SIM card with an active tariff (not blocked by the operator)

The battery is charged to at least 30% (distribution drains the battery significantly)

VPN and power saving modes are disabled-->

On Samsung Galaxy A31 with firmware One UI 5.0+ a function has appeared Automatic shutdown — If no devices are connected to the access point for 5-10 minutes, it turns off. To cancel this, go to Settings → Tethering & portable hotspot → Timeout and select Never.

Method 2: Quick sharing via the notification panel

If you urgently need to distribute the Internet without digging into the settings, use quick access toolbarThis method is convenient, but has limitations: you cannot change the network name or password, the default name is used. Samsung_A31_XXXX and an 8-digit password.

Instructions:

1. Swipe down from the top of the screen to open the notification panel.
2. Find the icon Access point (may be hidden - swipe left to reveal all icons).
3. Hold the icon for 1-2 seconds to open the settings.
4. Activate the slider and confirm permission to distribute (if prompted).

⚠️ Attention: In some firmware One UI 4.1 after a security update (eg March 1, 2023) The quick access panel may not save access point settings. If the phone returns the default password after rebooting, use the first method (via the settings menu).

Through the settings menu

Through the notification panel

USB modem

Bluetooth

I don't share my internet connection-->

3. Method: Distribution via USB (for PCs and laptops)

If you need to connect to the Internet desktop computer without Wi-Fi or a laptop with a faulty adapter, use USB modemThis method provides maximum connection stability (no interference, like with Wi-Fi) and minimal battery consumption of the phone (since charging is via USB).

Step-by-step instructions:

1. Connect Samsung Galaxy A31 to PC via original USB cable (cheap cables may not transmit data).
2. On your phone, select the mode File transfer (if prompted).
3. Open Settings → Connections → Tethering & portable hotspot.
4. Activate the slider USB modem.
5. On your PC, check the connection: in Windows, open Settings → Network & Internet — a connection should appear Ethernet or Network connection via USB.

⚠️ Attention: Some Windows 10/11 PCs may require driver installation. Samsung USB Modem DriverIf the connection doesn't work, download the driver from the official website. Samsung (support section for the model SM-A315F) or use the program Samsung Smart Switch, which will automatically install the necessary components.

4. Solving common problems

Even if the access point is configured correctly, Galaxy A31 may work unstably. Let's look at typical errors and how to fix them:

4.1 Devices do not connect to the access point

• 🔄 Restart your phone — sometimes a simple reboot helps.
• 🔒 Check your password - Enter it manually on the connecting device (autofill may make mistakes).
• 📵 Turn off traffic saving in the SIM card settings (Settings → Connections → Mobile network → Data saver).
• 🛠️ Reset network settings: Settings → General Management → Reset → Reset Network Settings.

4.2. The access point keeps disconnecting

If your internet connection is interrupted every 5-10 minutes, check:

• ⚡ Power saving mode - turn it off in Settings → Device Care → Battery.
• 📶 Signal strength If the 4G signal is weak (1–2 bars), your phone may turn off data sharing. Try moving closer to a window.
• 🔄 Software updates - in some versions One UI 4.1 There was a bug with automatic shutdown. Update your phone to the latest firmware.

What should I do if the operator blocks the distribution?

Some plans (for example, "For Smartphone" from MTS or "My Online" from MegaFon) limit or block modem functionality. Solutions:

1. Call the operator and request activation of the "Modem/Access Point" option (sometimes free).

2. Change your tariff to an unlimited plan with distribution permission (for example, "Everything for 500" from Tele2).

3. Use a VPN (For example, 1.1.1.1 or ProtonVPN) - sometimes this bypasses the blocking, but the speed may drop.

4. Enable developer mode and turn on the option USB debugging, and then use the app PdaNet+ to bypass restrictions (requires root on some firmware).

4.3. Low internet speed when distributing

If the speed through the access point is significantly lower than on the phone, follow these steps:

1. Check it out network mode: go to Settings → Connections → Mobile network → Network mode and select LTE/3G/2G (auto) or LTE only (if supported).
2. Turn it off secondary SIM cards - If you have two SIM cards, the second one may cause interference.
3. Change Wi-Fi frequency band:
   • 2.4 GHz - passes through walls better, but slower.
   • 5 GHz - higher speed, but smaller range and problems with older devices.

Turn it off VPN And ad blockers - They can limit traffic.

5. Distribution optimization: how to increase speed and uptime

To access the point on Galaxy A31 If you want it to work stably, follow these tips:

5.1. Setting up energy consumption

• 🔋 Disable the adaptive battery: Settings → Device Care → Battery → Advanced → Adaptive Battery (turn off).
• ⚡ Add the access point to exceptions: Settings → Device care → Battery → Power saving features → Never turn off → Tethering and portable hotspot.
• 🔄 Use a charger while distributing - this will prevent overheating and sudden shutdown.

5.2. Improving Wi-Fi signal

If devices lose connection with the access point:

• 📡 Place your phone on a higher level (for example, on a shelf) - this will increase the range.
• 🚫 Remove sources of interference: microwaves, other routers, wireless headphones.
• 🔄 Change Wi-Fi channel Manually: Select a channel in the access point settings 6 or 11 (less busy).

5.3. Limiting connected devices

By default Galaxy A31 allows you to connect up to 10 devices at the same time, but this puts a lot of strain on the processor and reduces speed. The optimal number is 3-4 devicesTo limit connections:

1. Open Settings → Tethering & portable hotspot → Mobile hotspot.
2. Click Connected devices.
3. Remove unnecessary devices from the list (click on them and select Forget).

6. Alternative methods of Internet distribution

If the standard methods don't work, try these options:

6.1. Distribution via Bluetooth (battery saving)

Suitable for internet transmission one device (for example, a tablet or laptop) with minimal battery drain. The speed will be low (up to 3 Mbps), but it's enough for messaging apps or email.

1. Turn on Bluetooth on both devices.
2. On the phone: Settings → Connections → Bluetooth → Find the target device and connect.
3. Return to Modem and access point and activate Bluetooth modem.
4. On the second device, confirm the connection to the Internet via Bluetooth.

6.2. Using third-party applications

If the built-in hotspot is blocked by your operator, try the following apps:

• 📱 PdaNet+ — bypasses operator restrictions, works without root (but requires installation of drivers on the PC).
• 🌐 NetShare — distributes the Internet via VPN, but may reduce speed.
• 🔗 ClockworkMod Tether — requires root rights, but gives full control over the settings.

⚠️ Attention: Data tethering apps may violate your plan's terms. Some carriers (e.g., Iota) accounts are blocked for using such programs. Check your provider's policies before installing.

6.3. Sharing via OTG cable (for PC)

If your USB modem isn't working due to driver issues, try connecting via OTG adapter And Ethernet cableTo do this:

1. Buy USB-C to Ethernet adapter (cost ~500 ₽).
2. Connect the adapter to your phone, and then connect the Ethernet cable to your router or PC.
3. Turn on USB modem in the phone settings.

This method gives maximum stability, but requires additional equipment.

7. Security when distributing Wi-Fi

Internet distribution via Galaxy A31 opens access to your network, so it is important to protect your data:

7.1 Setting up a strong password

• 🔐 Use a password that is long 12+ characters with numbers, letters and symbols (for example, S@msungA31_2026!).
• 🔄 Change your password every 1–2 months if you frequently share your internet connection in public places.
• 🚫 Do not use personal information (dates of birth, names) in your password.

7.2. Access Restriction

To prevent strangers from connecting to your access point:

• 📵 Turn on network hiding (activate in the access point settings Hide network).
• 👥 Limit the number of connected devices (maximum 4-5).
• 🔍 Periodically check the list of connected gadgets in Settings → Tethering & portable hotspot → Connected devices.

7.3. Protection from malicious connections

If you are distributing internet in a cafe, airport, or other public place:

• 🛡️ Turn it off file sharing via Wi-Fi (Settings → Connections → Advanced → Network Sharing).
• 🔒 Use VPN on your phone (For example, ProtonVPN or Windscribe) to encrypt traffic.
• ⚠️ Avoid connecting to public Wi-Fi networks while sharing your internet connection—this creates a vulnerability to attack.

FAQ: Frequently asked questions about Wi-Fi hotspots on the Samsung Galaxy A31

Is it possible to share Wi-Fi from the Galaxy A31 without a SIM card?

No, you need an active SIM card with a valid data plan to share your mobile data. However, you can share your data by connecting to another Wi-Fi network (such as your home router) and enabling the feature. Modem mode in the settings. To do this:

1. Connect to Wi-Fi.
2. Open Settings → Connections → Tethering & portable hotspot.
3. Activate Mobile hotspot — the phone will distribute the Internet from the router.

Why doesn't my connected device have internet access even though it's connected to a hotspot?

This problem occurs in 3 cases:

1. The operator is blocking distribution — check your tariff or call support.
2. Not enough IP addresses - Restart your phone and the connected device.
3. Conflict with VPN or firewall - Disable them on your phone and check the connection.

Also try manually setting DNS on the connected device: 8.8.8.8 (Google) or 1.1.1.1 (Cloudflare).

How to share internet from the Galaxy A31 to a Smart TV?

Majority Smart TV (For example, Samsung, LG, Sony Bravia) support connection to a mobile hotspot. Instructions:

1. On your phone, turn on the hotspot (as described in Method 1).
2. Open on your TV Settings → Network → Wireless connection.
3. Select your network Galaxy A31 and enter the password.
4. If the TV doesn't connect, change it on your phone. frequency band on 2.4 GHz (many TVs do not support 5GHz).

⚠️ On some models Samsung TV (series QLED 2020–2022) may need to be disabled Wi-Fi power saving mode in the network settings.

How much traffic is used when sharing the Internet?

Traffic consumption depends on the activity of connected devices:

• 📱 Messengers (WhatsApp, Telegram) — ~50–100 MB/hour.
• 🎵 Music (Spotify, YouTube Music) — ~70–150 MB/hour.
• 🎬 Video (YouTube in 720p) — ~600–900 MB/hour.
• 🎮 Online games (Fortnite, PUBG) — ~100–300 MB/hour.

To control your consumption, use the built-in traffic counter: Settings → Connections → Data Usage → Mobile DataHere you can set a limit and receive a notification when it is exceeded.

Can I use 5G tethering with the Galaxy A31?

Samsung Galaxy A31 does not support 5G networks - maximum speed is limited by the standard LTE Cat.6 (up to 300 Mbps in ideal conditions). However, if your operator provides LTE-Advanced (For example, MTS or Megaphone in large cities), the actual distribution speed can reach 50–100 Mbps.

To check supported frequencies, enter the code in the dialer: *#0011#In the menu that opens, you will see the current frequency band (for example, Band 3 or Band 7).