Smartphones of the series POCO X3, including NFC and Pro models, have proven themselves to be powerful devices with excellent communication modules. The ability to turn the device into a full-fledged mobile router is one of the most sought-after features for users working on the go or without access to wired internet. Unlike older models, modern Qualcomm Snapdragon processors installed in POCO, provide stable data transfer speed and low power consumption when operating in modem mode.
However, Android's default settings often hide advanced options that allow you to optimize hotspot performance. Many users don't even realize they can change the frequency band or set up automatic shutdown to save battery life. Proper configuration Wi-Fi hotspots It allows you not only to share the Internet, but also to protect your data from unauthorized access.
In this article, we'll walk you through the entire setup process, from basic setup to fine-tuning security settings. You'll learn how to avoid device overheating and why choosing the right frequency is critical for connection speed. Follow the instructions to maximize your device's potential. Xiaomi POCO to the maximum.
Basic activation of modem mode in MIUI
The process of enabling Internet sharing on the shell MIUI, which is installed on POCO X3, is as simple as possible for the average user. Just a few simple steps in the settings menu are all it takes to start broadcasting the network. However, it's important to understand the difference between quickly turning it on via the shortcut and deeply customizing the settings.
To launch the app for the first time, you need to go to the main settings menu of your smartphone. Find the section, which may be called "Wi-Fi hotspot" or "Portable hotspot," depending on the firmware localization version. This is where you'll find key switches, which control visibility and access to the network.
⚠️ Attention: When you first turn on your hotspot, the system may automatically activate mobile data, even if it was previously disabled. Make sure you have a suitable data plan to avoid unexpected data charges.
Once the feature is activated, the smartphone will begin broadcasting a signal. By default, the network name (SSID) usually contains the device model, for example, POCO X3 NFCThe password is also generated automatically by the system, but it is strongly recommended to change it to a more complex one for security purposes. Default passwords are often easily guessed using simple algorithms.
Setting up security and access password
Wireless network security is the foundation on which your personal data protection is built. When you share the internet with POCO X3, your device becomes a gateway for all connected clients. Using outdated encryption protocols or weak passwords can lead to traffic interception by attackers.
In the access point settings, find the “Security” item. For Android 10 and newer versions that are relevant for this model, the optimal choice is the protocol WPA3-Personal, if the connected devices support it. Otherwise, you should use WPA2-PSKAvoid using Open or outdated network WEP, as they do not provide the required level of protection.
The passphrase should be complex enough to prevent brute-force attacks. It is recommended to use a combination of uppercase and lowercase letters, numbers, and special characters. The password should be at least 12 characters long. Avoid obvious combinations such as a date of birth or a sequence of numbers.
- 🔒 Use mixed case letters and numbers to create a strong password.
- 📱 Avoid using personal information (names, dates) as an access key.
- 🔄 Change your password regularly if other devices have connected to your access point.
You can also find the option to hide the network name in this section. If you activate the "Hide Device" feature, your POCO X3 The SSID won't be broadcast in the general list of available networks. To connect, other users will have to manually enter the network name, which adds an additional layer of privacy, although it's not completely secure from hackers.
Choosing a Frequency Band: 2.4 GHz vs. 5 GHz
One of the most important settings for owners POCO X3 The choice of frequency range is crucial. The smartphone's hardware allows for operation in two frequency ranges: 2.4 GHz And 5 GHzUnderstanding the difference between them will help you achieve maximum speed or signal range depending on your situation.
The 2.4 GHz band is more common and compatible. It provides better signal penetration through walls and has a longer range. However, this band is often congested with signals from neighboring routers, Bluetooth devices, and microwave ovens, which can lead to interference and reducing speed.
The 5 GHz band, on the other hand, offers significantly higher data transfer rates and is virtually interference-free in apartment buildings. If you're in close proximity to the receiving device (laptop or tablet), choosing 5 GHz will ensure maximum performance. POCO X3 like a router.
| Parameter | 2.4 GHz | 5 GHz |
|---|---|---|
| Transfer speed | Up to 150-300 Mbps | Up to 400-800+ Mbps |
| Range of action | High | Medium/Low |
| Penetration ability | Good | Bad |
| Airtime congestion | High | Low |
To switch the range, go to Access point settings and find "AP Band." Select "Prefer 5 GHz" for speed or "2.4 GHz" for maximum compatibility with older devices. Some MIUI versions allow you to select automatic mode, but manual settings often produce more predictable results.
Managing connected devices and limits
Controlling who is connected to your network is a critical feature. POCO X3 Allows you to not only view the list of active clients but also manage them. The access point menu typically displays the number of connected devices and their names.
You can manually limit the number of connected users. This is a useful feature if you want to conserve battery life or limit data usage. Setting a limit of 1-3 devices will prevent neighbors from hogging your internet without your knowledge. The system will automatically reject connection attempts exceeding the set limit.
⚠️ Attention: The Whitelist feature allows only pre-approved devices to connect by MAC address. This is the most reliable security method, but it requires manual configuration of each new device, which can be inconvenient in a dynamic environment.
It's also worth paying attention to the timeout feature. In the settings, you can set a time after which the access point will automatically turn off if no one is connected. This prevents you from forgetting to turn off the Wi-Fi module, which causes it to continue wasting power.
- ⏱️ Set the "No Connections" sleep timer to 1 or 2 minutes to save energy.
- 👥 Regularly check the list of connected devices in the status bar or settings menu.
- 🚫 Block unknown devices immediately through the access point management interface.
Optimize energy consumption and prevent overheating
Hotspot mode is one of the most resource-intensive processes for a smartphone. Radio module POCO X3 The device operates at its limits, constantly transmitting and receiving data packets. This inevitably leads to overheating of the case and rapid battery drain.
To minimize negative effects, it is recommended to reduce screen brightness or turn it off completely if visual monitoring is not required. It is also worth closing background applications that are not in use to free up processor time and RAM. Using heavy gaming application simultaneously with Wi-Fi distribution, it can lead to throttling (decreased performance) due to overheating.
In the battery settings, you can check whether background activity is restricted for system services, although tethering is usually a high priority. However, MIUI's aggressive optimization can sometimes "kill" the tethering process to save power. Add the access point to the exception list or allow it to auto-start.
If your smartphone becomes too hot to hold, take a break. Prolonged overheating can accelerate battery degradation. In extreme cases, you can direct a fan toward the device, but avoid placing it in the refrigerator or freezer.
Advanced settings via the engineering menu and ADB
For advanced users who find MIUI's standard features insufficient, there are methods for deeper customization. Using USB debugging and a tool ADB (Android Debug Bridge) allows you to change hidden settings not accessible through the graphical interface. This requires a computer connection and basic command-line skills.
One useful command is changing the hidden timeout or forcing the activation of specific Wi-Fi channels. However, using such methods requires caution. Incorrectly modifying system files or settings can lead to unstable operation of the wireless module.
adb shell settings put global tether_dun_required 0The above command can help in cases where the telecom operator blocks Internet distribution (TTL check). Although POCO X3 If you have powerful hardware, bypassing operator restrictions may be against your contract. Only use such methods if you are confident in the legality of your actions in your region.
☑️ Check before using ADB
It is also possible to install third-party applications from the store. Google Play, which provide a more flexible access point management interface. They allow you to create schedules, keep connection logs, and configure more complex traffic filtering rules. However, keep in mind that granting such permissions to third-party software reduces the overall security level of the system.
Troubleshooting connection issues
Despite the reliability POCO X3, users may encounter common issues: devices cannot see the network, there is a connection but no internet, or the speed is slow. Most often, the problem lies in an IP address conflict or an incorrectly selected frequency band.
If the device fails to connect, try forgetting the network on the client device and reconnecting. Make sure the date and time are synchronized on both devices, as desynchronization can cause security certificate errors. You should also try resetting the network settings on the device itself. POCO, although this will require re-entering passwords for all known Wi-Fi networks.
⚠️ Attention: The settings interface and item names may vary slightly depending on the firmware version (Global, Russia, China) and Android version. If you can't find it, search the settings by entering the keyword "Point" or "AP."
If your speed is low, check your mobile network signal strength. If your smartphone shows 3G or EDGE, don't expect high Wi-Fi speeds. Also, make sure you haven't reached your carrier's data limit. In some cases, switching the network mode in your mobile internet settings (for example, forced) can help. 4G/LTE).
Why doesn't my laptop see the 5GHz network with POCO X3?
Most likely, your laptop's network adapter is outdated and only supports the 2.4 GHz band. It's also possible that you've selected a Wi-Fi channel that isn't supported by your laptop's driver (for example, some 5 GHz channels are restricted in some regions). Try switching POCO in 2.4 GHz mode for testing.
How to share internet via USB instead of Wi-Fi?
Connect your smartphone to your computer using a cable. Go to Settings -> Connection and sharing (or Access Point) and turn on the "USB Tethering" switch. This method provides a more stable connection and simultaneously charges your phone.
Is it possible to share Wi-Fi if the phone is connected to Wi-Fi?
On POCO X3 Modern versions of MIUI offer a Wi-Fi Repeater feature. You can receive internet via Wi-Fi and distribute it further, creating your own network with a different name. However, this increases the load on the module and may reduce overall speed.
Why does the battery drain quickly when distributing?
The radio module operates in constant active transmission mode, which consumes significant current. Furthermore, if many devices are connected to the access point or large files are being downloaded, the processor also works more intensively. Using a power bank is recommended in such cases.