The modern smartphone has long ceased to be just a device for making calls, turning into a full-fledged mobile office and entertainment center. Model Samsung Galaxy A20Despite its age, Wi-Fi remains a popular choice thanks to its balanced features and affordable price, allowing users to stay online in any situation. There's often a need to quickly share internet with a colleague's laptop, tablet, or gaming device when wired connections are unavailable.
The built-in Wi-Fi hotspot function allows turn your gadget into a router, using 3G or 4G mobile data. This solution is ideal for working in cafes, on trips to the countryside, or when your home provider is temporarily down. However, to ensure a smooth experience and avoid draining your battery in an hour, it's important to configure your network settings correctly and understand your data plan's limitations.
In this article, we'll cover all the steps for activating tethering mode, ways to improve connection security, and methods for optimizing power consumption. You'll learn how to hide your network from prying eyes and which frequency settings to choose for maximum data transfer speeds. Being ready to work anywhere in the world starts with properly understanding your device's capabilities.
⚠️ Attention: Before actively sharing your internet, be sure to check your remaining data in your carrier's account. Unlimited smartphone plans often limit the amount of data that can be transferred to other devices, and exceeding this limit can result in blocking or additional charges.
Preparing the device and checking the settings
Before you begin activating the access point, you need to make sure that the basic system settings are correct. Mobile data These SIM cards must be enabled, as they will be used to transmit internet to other devices. If the SIM card is blocked or the balance is negative, tethering will not work, even if the activation slider is green.
An important aspect is the operating system version. Android and shells One UI, installed on your Galaxy A20The menu interface may differ slightly depending on whether you've updated your firmware to the latest version. We recommend going to the updates section and checking for new security patches, which often contain fixes for the Wi-Fi module.
☑️ Pre-launch check
It's also worth paying attention to the device name that the network will see. By default, it often contains the phone model, which may be inappropriate in public places. Renaming a device In Bluetooth and connection settings, this will add a bit of anonymity. This is a simple but useful digital hygiene measure that many people forget.
Step-by-step Wi-Fi hotspot activation
The process of enabling modem mode in the shell One UI from Samsung It's extremely simplified and takes just a few seconds. First, pull down the notification shade by swiping down from the top and find the icon Access point and modemIf you don't see it in the quick access menu, click the three dots in the corner of the menu to edit the quick access list and add the desired item.
More detailed settings are available through the main settings menu. Follow the path Settings → Connections → Wi-Fi hotspot & tetheringHere you'll see a toggle switch that needs to be enabled. The system will automatically create a network using the default settings if you haven't changed them previously. The network name and password will be displayed immediately below the toggle switch.
To change security settings, click on the text Wi-Fi hotspot (not on the switch, but on the section name). A menu will open where you can set a new password, select an encryption protocol, and change the network name (SSID). It is recommended to use the protocol WPA2 PSK, as it provides reliable protection of data from interception.
Frequency range adjustment and compatibility
One of the key settings that affects speed and compatibility is the frequency band selection. In the access point menu, find the option AP rangeHere you will be offered a choice between 2.4 GHz And 5 GHzUnderstanding the difference between them is critical to the stable operation of connected devices.
The 2.4 GHz band is a universal standard. It provides better signal penetration through walls and is compatible with the vast majority of older and budget devices, including some smart devices and older laptops. However, data transfer rates are lower here, and the airwaves are often congested by neighboring routers.
The 5 GHz band offers significantly higher speeds and lower latency, making it ideal for video streaming or online gaming. However, its range is shorter, and many older devices simply won't detect your network. If you're sharing internet with a modern Ultrabook, 5 GHz is the obvious choice.
| Parameter | 2.4 GHz | 5 GHz |
|---|---|---|
| Speed | Up to 150-300 Mbps | Up to 400-800+ Mbps |
| Range | High | Average |
| Compatibility | All devices | Only modern ones |
| Noise immunity | Low (many neighbors) | High |
⚠️ Attention: Wi-Fi module specifications may vary depending on the regional version. Galaxy A20Some modifications may not support the 5 GHz band in access point mode due to manufacturer software limitations.
Why doesn't the device see the 5 GHz network?
If your laptop or tablet doesn't display the created network, it's likely that its network adapter doesn't support this frequency range. Try switching to 2.4 GHz in your phone's settings.
Managing Connected Devices and Security
Controlling who is connected to your network is a crucial aspect of security. In the access point menu on Samsung Galaxy A20 there is a section Connected devices, which displays a list of all active clients. Here you can see the device name and its MAC address, allowing you to identify intruders.
For maximum protection, you can use the function Whitelist (Allow list). By activating this mode, you block connections from all devices except those whose MAC addresses are manually added to the list. This is the most reliable protection method, although it requires initial configuration of each trusted device.
- 🔒 Change your hotspot password regularly, especially after using it in crowded places.
- 👀 Keep an eye on the connection count indicator in the notification bar.
- 🚫 Turn off the hotspot immediately after use to avoid wasting battery.
If you notice a device you don't recognize, immediately block it by clicking the corresponding button in the client list and change the password. Don't rely solely on a strong password, as there are programs for brute-forcing keys, so visually inspecting the connection list remains crucial.
Power optimization and timeout
Hotspot mode is one of the most power-hungry processes on a smartphone. The Wi-Fi module works hard, constantly transmitting and receiving data packets, which causes the device to heat up quickly. Galaxy A20 and battery drain. To extend battery life, it's important to properly configure the timeout.
In the access point settings, find the item Access point timeoutHere you can set the time after which the feature will automatically turn off if no one is connected. The default value is often 10 minutes, but you can increase it to 30 minutes or disable it completely if you plan on a long session.
It's also a good idea to reduce screen brightness or turn it off completely after connecting clients. A smartphone's screen in modem mode is an unnecessary source of heat and energy consumption. If the phone is lying on a table, it's best to turn it face down for better cooling, but make sure it's not covered with a cloth.
There's a myth that constantly using a phone as a router quickly destroys it. In fact, modern power controllers can regulate the load. However, chronic overheating is actually harmful to lithium-ion batteries, so try to avoid leaving your hotspot in direct sunlight.
Solutions to common problems and errors
Despite the stability of work AndroidUsers may encounter a situation where the phone has internet access, but connected devices display "No internet access." Often, the problem lies in the settings. APN (Internet access points) of your mobile operator. Check that the correct profile is selected for your SIM card.
Another common cause of crashes is a full network service cache. If your hotspot won't turn on or crashes immediately, try resetting your network settings. This will restore all network settings to factory defaults without deleting your personal files, photos, or contacts.
To perform a reset, go to Settings → General Settings → Reset → Reset Network SettingsAfter restarting your phone, you'll need to re-enter the passwords for your saved Wi-Fi networks, but the sharing issue will likely resolve. This is a universal solution for many network conflicts.
- 🔄 Restart your phone if the distribution is stuck at the "Connecting" stage.
- 📡 Make sure that Data Saver mode is not enabled, which may block background transfers.
- 🔋 Check if your phone is in "Power Saving" mode, which limits Wi-Fi.
Why is the Wi-Fi speed from my phone lower than directly on it?
Speed may drop due to limitations of the Wi-Fi module, which simultaneously transmits and receives data, and due to traffic encryption. Furthermore, distance and the presence of walls between the phone and the receiving device play a critical role.
Is it possible to share the Internet if the phone is connected to Wi-Fi?
On most modern versions of Android and Samsung operating systems, this feature is unavailable through standard means. A phone cannot simultaneously act as a Wi-Fi client and a Wi-Fi extender. However, there are third-party apps that require root access that can bypass this limitation.
Does Wi-Fi hotspot affect call costs?
No, internet tethering does not affect your voice call rates. However, if you receive a call while Wi-Fi tethering, your internet connection may be interrupted or switched to EDGE/3G, depending on your VoLTE settings and your carrier's network model.