The modern smartphone has long ceased to be just a device for making calls, turning into a full-fledged control center for the digital world. Model Samsung Galaxy A20Despite its age, the Wi-Fi router remains a popular budget device capable of performing multiple functions, including serving as a mobile router. When wired internet is unavailable or your home provider is down, this feature becomes a lifesaver for laptops, tablets, and other gadgets.
Before setting up, it's important to understand that tethering uses your mobile carrier's data plan. If you don't have an unlimited plan, your data speed may be limited, and your data plan may quickly run out. For owners Samsung A20 It's a good idea to check your plan balance and terms in advance to avoid any unpleasant surprises when you're billed.
The process of activating an access point in the shell One UI Samsung's interface is as simple and intuitive as possible. However, for stable operation and network security, simply pressing a button isn't enough—you need to properly configure encryption and frequency settings. In this article, we'll cover all the details that will help turn your smartphone into a reliable wireless internet source.
Basic activation of the access point via the curtain
The fastest way to start sharing internet on Samsung Galaxy A20 — using the quick settings panel, often referred to as the "curtain." This method is ideal when you urgently need to grant network access to another device and don't have time to delve into complex menus. Simply unlock your smartphone's screen and swipe down from the top to open the notification panel.
In the list of icons that opens, find the item labeled "Access Point" or "Mobile Hotspot." If you don't see the desired icon on the first screen, swipe left or right to see additional widget pages. Tapping the icon will activate tethering mode, and your smartphone will begin broadcasting a Wi-Fi signal.
⚠️ Attention: When first turned on, the system may request confirmation to disconnect currently connected Wi-Fi networks, as the module cannot simultaneously receive and transmit a signal on the same frequency in standard mode.
Once activated, an access point icon will appear next to the battery indicator, indicating the device is ready for use. However, the default settings may not be optimal for your needs, so it's recommended to access the configuration menu at least once to set a secure password.
Configuring network and security settings
To prevent unauthorized individuals from using your traffic, it's crucial to change your default security settings. By default, the network name often includes your phone model, making it easily recognizable to attackers, and the password may be too simple. To change these settings, go to Settings → Connections → Wi-Fi hotspot & tethering.
In the menu that opens, select "Wi-Fi Hotspot" (by going to Settings, not by pressing the switch). Here you'll see the "Network Name (SSID)" field. Cybersecurity experts recommend avoiding using personal information, such as your last name or apartment number, in your network name. It's better to come up with a neutral name that won't attract unnecessary attention.
Particular attention should be paid to the "Password" field. Encryption protocol WPA2 PSK used in Samsung A20, provides reliable protection, but only if you choose a complex password. It must contain at least 8 characters, including uppercase and lowercase letters and numbers. Simple combinations like "12345678" can be cracked in seconds.
☑️ Network security check
The "Hide Device" feature is also available in this menu. If you enable this feature, your access point will no longer appear in the list of available networks on other devices. To connect, you'll need to manually enter the exact network name (SSID) on the receiving device, adding an extra layer of privacy.
Choosing a Frequency Band: 2.4 GHz vs. 5 GHz
One of the key settings that affects the speed and range of distribution is the choice of frequency range. In the access point settings Samsung Galaxy A20 You can find the "Band" setting. The default is often 2.4 GHz, which provides maximum compatibility with older devices but is slower.
The 5 GHz band offers higher data transfer rates and is less susceptible to interference from neighboring routers and household appliances. However, the signal range in this range is significantly shorter, and many older laptops and tablets may simply not detect your network. The choice depends on the specific devices you plan to connect.
Technical differences between ranges
The 2.4 GHz band has fewer channels and is often congested in apartment buildings, resulting in slower speeds. The 5 GHz band offers more available channels, but the signal penetrates walls and concrete floors less effectively.
If you're in the same room as the device you're connecting to and need maximum speed for downloading files or watching 4K videos, switching to 5 GHz makes sense. If your laptop is in another room, it's best to stick with 2.4 GHz for a stable connection.
Managing connected devices and limits
You can control who's connected to your network through the "Device Management" menu. This displays a list of all devices currently using your internet connection. You can see the device name, its IP address, and the amount of data transferred.
An important feature is the ability to block specific users. If you notice an unfamiliar device in the list, you can click on it and select "Block." This will immediately terminate the connection for that client, even if they know the password.
| Parameter | Description | Recommendation |
|---|---|---|
| Max. number of devices | Limit of simultaneous connections | No more than 3-5 devices |
| Time-out | Time to shutdown during idle time | 5 or 10 minutes |
| Range | Signal frequency (2.4/5 GHz) | 5 GHz for speed |
| Encryption | Data Protection Protocol | WPA2 PSK (required) |
You can also set "Hot Spot Timeout" in the settings. This feature automatically turns off Wi-Fi sharing if no one is connected to the network for a set period of time (e.g., 5 or 10 minutes). This is a useful option for saving battery life. Samsung A20, which does not have a huge capacity.
Sharing the Internet via USB and Bluetooth
A wireless connection isn't always the best solution. If you need to connect a desktop computer without Wi-Fi, or want to minimize battery drain, wired and Bluetooth methods can help. USB modem Allows you to charge your phone and transmit internet at the same time.
To activate the USB modem, connect your smartphone to your computer using the original cable. Then, in the menu Settings → Connections → Wi-Fi hotspot & tethering Enable the "USB Modem" switch. Your computer will automatically recognize the new network connection, just as if you were connecting a regular Ethernet cable.
Bluetooth modem is slower than Wi-Fi or USB, but consumes significantly less power. This option is suitable for transferring small amounts of data, such as checking email or messaging apps. The pairing process requires confirmation of a code on both devices, providing an additional level of security.
⚠️ Note: Drivers may be required for the USB modem to work on a Windows computer. These are usually installed automatically, but in rare cases (especially on older operating systems), manual installation of Samsung drivers may be required.
Connection problems and their solutions
Users Samsung A20 Sometimes we encounter situations where devices see the network but can't connect, or where the connection is established but the internet isn't working. One common cause is a malfunctioning DHCP server on the smartphone, which can't assign an IP address to the client. In this case, simply rebooting the access point helps.
Another common issue is channel incompatibility. If you're in an area with a lot of other Wi-Fi networks, they can jam your phone's signal. In such cases, changing the channel in the advanced settings (if available in your firmware version) or switching the band from 5 GHz to 2.4 GHz can help.
It's also worth checking your date and time settings. If your smartphone's time is out of sync, security certificates may not work correctly, leading to connection errors with modern devices. Make sure "Automatic date and time" is enabled in your settings.
The impact of Wi-Fi distribution on battery and heating
The hotspot mode is one of the most power-consuming modes for any smartphone, and Samsung Galaxy A20 is no exception. The wireless module operates in a constant, active data transfer mode, which quickly drains the battery and heats up the casing. Extended use in this mode can shorten the battery life.
During active sharing, it's recommended to remove your protective case if it's thick and doesn't dissipate heat well. Overheating can lead to throttling (reduced processor performance) and forced hotspot shutdown by the security system. If you're planning a long session, it's best to keep your phone charging in a well-ventilated area.
There's a myth that Wi-Fi hotspots damage a phone's hardware. In fact, modern power controllers reliably protect the device. However, regular overheating above 45 degrees Celsius does negatively impact the chemistry of lithium-ion batteries, reducing their capacity over time.
Why does the access point turn off by itself?
Automatic shutdown is most often caused by power saving settings. Check the timeout setting in the access point menu. The system may also shut down the module if it reaches critical temperatures or the battery level drops below 10-15%.
Is it possible to share Wi-Fi if it is already connected to the phone?
Most Samsung firmware versions don't allow Wi-Fi to be transmitted and received simultaneously—the module switches. However, there are third-party apps and root access that can bypass this limitation, but stability is not guaranteed.
How do I find out who is stealing my internet?
Go to your hotspot settings and select "Connected devices." A list of all devices will be displayed. If you see an unknown name or MAC address, change the password immediately and block the device.
Does tethering affect mobile internet speed?
Yes, the speed is divided among all connected clients. If three devices are connected to your hotspot and all are downloading files, the speed on each will be approximately three times slower than the maximum available in your coverage area.