How to Share Internet from a Samsung Galaxy A51 to Another Phone: 4 Proven Methods

You find yourself in a situation where you urgently need to share the Internet from another phone, but only yours is at hand Samsung Galaxy A51? No problem! This smartphone supports all modern methods of data distribution - from classic mobile hotspot to lesser known, but no less effective methods like Wi-Fi Direct or USB ternetIn this article, we will examine each option in detail, taking into account the nuances specific to the model. A51, and we'll also tell you how to bypass typical connection errors.

It's important to understand that internet tethering isn't just a matter of checking a box in the settings. The method you choose affects connection speed, battery life, and even compatibility with other devices. For example, Bluetooth terneting more energy efficient, but slower than Wi-Fi, and USB connection Provides maximum stability but requires a cable. We'll help you choose the optimal method for your needs—whether it's fast file transfers or long-distance web surfing.

If you have previously encountered problems such as a sudden disconnection of the access point or the inability to connect a second phone, you will find at the end of the article table of typical mistakes and their solutions. And for those who want to delve into the technical details, we've added spoilers explaining why this happens (for example, why Samsung A51 may limit the distribution speed on some firmware).

1. Sharing Wi-Fi via a mobile hotspot (tethering)

This is the most popular and universal method that works on all devices. Samsung, including Galaxy A51The idea is simple: your phone turns into a mini-router that distributes internet via Wi-Fi. The main advantages are high speed (up to 150 Mbps on A51) and the ability to connect up to 10 devices simultaneously. The downside is increased battery consumption (up to 20-30% per hour with active use).

To turn on the hotspot:

1. Open Settings → Connections → Mobile hotspot and modem.
2. Tap on Mobile hotspot and move the slider to the right.
3. On the menu Setting up an access point (gear in the upper right corner) you can:
   • 🔒 Edit network name (SSID) — by default this is the phone model.
   • 🔐 Install password (we recommend using WPA2 PSK).
   • 📶 Select frequency range — 2.4 GHz (better for range) or 5 GHz (faster, but smaller radius).

Once activated, a notification with the network name and password will appear on the screen. The second phone should find this network in the list of available Wi-Fi networks and connect to it. If the connection fails, check if there's a blocker. firewall or antivirus traffic distribution (more about this in the section on errors).

Mobile internet is on and working (check the 4G/5G icon in the status bar)|

Traffic limits have not been exhausted (especially relevant for tariffs with a daily limit)|

On the second phone, the "Traffic Saver" mode is disabled in the Wi-Fi settings|

The password was entered correctly (case sensitive!)-->

2. Sharing the Internet via Bluetooth (power-saving mode)

If you need to share the Internet for a short time and without draining your battery, Bluetooth terneting — is a great option. The speed here is lower (up to 3-5 Mbps), but the power consumption is minimal. This method is ideal for sending messages, checking email, or briefly surfing the web.

Instructions for Samsung Galaxy A51:

1. Activate Bluetooth on both phones (Settings → Connections → Bluetooth).
2. On the donor phone (A51) go to Settings → Connections → Mobile hotspot & tethering and turn it on Bluetooth modem.
3. On the second phone, find your Bluetooth settings. Galaxy A51 in the list of devices and tap on it. In the window that appears, select Connect to access the network (the wording may differ depending on the model).

Please note: Some mobile operators block Bluetooth internet at the SIM card levelIf the connection fails, check your plan's terms or try a different data sharing method.

Mobile hotspot (Wi-Fi)|

Bluetooth terneting|

USB connection|

Wi-Fi Direct|

Never given out-->

3. Internet sharing via USB (maximum stability)

This method is suitable if you have USB cable (preferably original or certified) and you need to ensure the most stable connection. USB internet speed is limited only by the port's capabilities (USB 2.0 on A51 gives up to 480 Mbps(But actual speed depends on your carrier.) The main advantage is minimal battery drain, as the phone charges simultaneously.

How to set up:

1. Connect Galaxy A51 to a second phone (or computer) via a USB cable.
2. On A51 a notification will appear in the notification bar USB for file transferTap on it and select Transferring data via USB (or USB modem, if there is such a clause).
3. If the item is missing, go to Settings → Connections → Mobile hotspot & tethering and turn it on USB modem.

On some firmware versions Samsung You may be asked to confirm your screen unlock. Also, please note that not all phones support USB tethering—for example, iPhone will not be able to use this method without additional adapters.

4. Internet sharing via Wi-Fi Direct (direct connection)

Wi-Fi Direct — is a technology that allows devices to connect directly without a router. Samsung Galaxy A51 It can be used for internet sharing, but with some caveats: not all phones support Direct data transfer. However, it works for file sharing or emergency internet connection.

Step-by-step instructions:

1. Turn on both phones Wi-Fi And Wi-Fi Direct (Settings → Connections → Wi-Fi → Wi-Fi Direct).
2. On A51 (donor phone) find the second phone in the list and send a connection request.
3. Once the connection is established, return to Settings → Connections → Mobile hotspot & tethering and turn it on Wi-Fi Direct (if such an option exists). On some firmware versions, this mode is activated automatically.

If the Internet is not transmitted, check whether the second phone supports the function Internet Sharing via Wi-Fi DirectFor example, devices on clean Android (like Pixel) often refuse to work in this mode, and phones Samsung or Xiaomi cope better.

Why might Wi-Fi Direct not transmit internet?

Wi-Fi Direct technology is primarily designed for exchanging data between devices, not for sharing internet. Some manufacturers (including Samsung) add this feature as a bonus, but its support depends on the firmware version and phone model. If your A51 doesn't have a "Wi-Fi Direct" option in the modem settings, your software version doesn't support it.

5. Common mistakes and their solutions

Even with proper setup, internet tethering may not work. Below is a table of the most common problems on Samsung Galaxy A51 and ways to eliminate them:

Problem	Possible cause	Solution
The hotspot turns on, but the second phone doesn't connect.	Incorrect password or operator restrictions	Check your password (case-sensitive). If that doesn't help, reboot both phones or change the Wi-Fi band from 5 GHz to 2.4 GHz.
The Internet is available, but very slowly.	Operator speed limiting or background apps	Close all apps on the donor phone. Check your data plan limits (some carriers reduce speeds after 10 GB).
The USB modem is not working.	Non-original cable or missing drivers	Use the original cable. Drivers may need to be installed on your PC. Samsung USB Driver
Bluetooth connection disconnects after 5 minutes	Power saving on one of the phones	Disable Bluetooth power saving mode in Battery settings.

If none of the methods worked, check if your distribution is blocked mobile operatorSome plans (especially unlimited ones) limit internet access. You can find out more:

• 📞 By calling the operator's support team (the number is usually indicated on the SIM card).
• 🌐 In your personal account on the operator's website, in the "My tariff" section.
• 📱 Via USSD command (for example, *100# For MTS or *111# For Beeline).

6. How to save battery life when sharing the Internet

Sharing Wi-Fi or USB modem significantly reduces operating time Galaxy A51 from a single charge. To extend battery life:

• 🔋 Connect your phone to a charger (even a USB modem consumes power).
• 🌑 Reduce screen brightness and turn on dark theme.
• ❄️ Turn off background app syncing (Settings → Accounts and backup → Auto-sync data).
• 📴 Transfer your phone to airplane mode, but leave Wi-Fi turned on (if you are distributing via an access point).

If you are distributing the Internet for a long time (for example, outdoors), take it with you powerbank capacity from 10,000 mAh - this is enough for 2-3 full charging cycles A51.

7. Wi-Fi Security: How to Protect Your Data

When you share the Internet through an access point, your Samsung Galaxy A51 becomes vulnerable to potential attacks. Here's how to minimize the risks:

• 🔐 Always use complex password (at least 8 characters with numbers and letters). Avoid simple combinations like 12345678.
• 👥 Limit the number of connected devices (you can set a limit in the access point settings).
• 🕵️ Turn off sharing when you don't need it—even a secure network can be hacked if connected for long periods of time.
• 🛡️ Install on your phone antivirus (For example, Kaspersky or Bitdefender), which monitors network activity.

If you are distributing the Internet in a public place (cafe, airport), avoid using online banking or logging into important accounts from a second device. Attackers can intercept your traffic if they connect to your access point.

Is it possible to share internet from A51 to a laptop?

Yes, all the described methods (Wi-Fi, USB, Bluetooth) also work for connecting laptops. A USB modem on Windows may require driver installation. Samsung USB Driver for Mobile PhonesOn MacOS, it's usually enough to trust the device in the network settings.

FAQ: Frequently asked questions about tethering with the Samsung A51

Can I share my A51 internet connection if I have an unlimited data plan?

Yes, but some operators limit internet speeds even on unlimited plans. For example, after 50 GB of shared data, the speed may drop to 64 kbps. Check the terms and conditions in your operator account.

Why does the battery drain quickly on the A51 when distributing Wi-Fi?

Sharing your internet connection is a resource-intensive process. The Wi-Fi module and processor operate at increased power. To reduce consumption, use a USB modem (it simultaneously charges your phone) or Bluetooth (it's less power-hungry, but slower).

Is it possible to share internet from A51 to iPhone?

Yes, but with nuances:

• The Wi-Fi hotspot works without problems.
• Bluetooth ternet is only supported on iPhones running iOS 13 or later (select "Connect to network" in Bluetooth settings).
• The USB modem will not work without an additional adapter. Lightning-to-USB and may require manual network configuration on the iPhone.

How to increase the range of the access point on the A51?

The radius depends on the Wi-Fi range:

• 2.4 GHz - further (up to 50 meters in ideal conditions), but slower and subject to interference.
• 5 GHz — faster, but the radius is smaller (up to 20 meters).

To increase range, switch to 2.4 GHz in your hotspot settings. Also, avoid obstacles (walls, metal objects) between the phones.

What should I do if my internet connection is blocked by my operator?
There are several options:
• Change your tariff to one that allows data sharing (usually these are tariffs marked "Unlimited" or "For modem").
• Use a VPN on the donor phone (some carriers block TTL terneting, and a VPN bypasses this).
• Connect to a different operator (for example, via eSIM) that does not block tethering.

⚠️ Please note: Bypassing operator blocks may violate your user agreement. Please check your plan's terms before using a VPN.