Modern smartphones have long ceased to be mere devices for making calls, having become powerful control centers for the digital world. Device owners Xiaomi Redmi often face the need to provide network access to other devices, be it a colleague's laptop or a child's tablet. A feature that turns your phone into a fully-fledged mobile router, called a WiFi hotspot. This solution allows you to instantly share 4G or 5G mobile internet with any device that supports wireless communication standards.
Unlike a Bluetooth modem, which provides low data transfer rates, a smartphone's WiFi module is capable of delivering a full-fledged high-speed signal. MIUI and its new version HyperOS This functionality is deeply integrated and offers a variety of flexible settings for optimized performance. You can not only share the internet, but also secure the connection, set traffic limits, and select the optimal frequency range for a stable connection.
Understanding how this feature works is crucial for efficient use of your device's resources. Incorrect settings can lead to rapid battery drain or an unstable signal. In this article, we'll take a detailed look at how to turn your Xiaomi Redmi to a reliable internet source, what hidden features the system provides, and how to avoid common configuration errors.
How a mobile hotspot works
When you activate the modem mode, the smartphone stops being just a client of the cellular network and takes on the functions base stationThe device's internal radio module switches to broadcast mode, creating a local wireless network. All data passing through this network is routed through the SIM card installed in the phone, using GPRS, EDGE, 3G, LTE, or 5G packet data technologies.
It's important to understand that the network being created has its technical limitations. The channel's bandwidth is divided among all connected clients, and latency (ping) can be higher than with a direct wired connection. The smartphone's processor and radio module experience increased load, which inevitably leads to heat dissipation and accelerated battery consumption.
⚠️ Caution: When operating in hotspot mode for extended periods, the smartphone's body may become very hot. This is a normal physical reaction to high loads on the radio component, but it is recommended to remove the protective case for better heat transfer.
System Android in conjunction with the shell from Xiaomi Uses the WPA2-PSK or WPA3-PSK security standards to encrypt transmitted traffic. This means that even if an attacker intercepts the radio signal, they won't be able to decrypt the data packets without knowing the password. However, using outdated encryption protocols can make the network vulnerable to brute-force attacks.
Technical details of NAT operation
When operating as a hotspot, your smartphone performs NAT (Network Address Translation). All requests from connected devices are masked under a single external IP address assigned by the mobile operator. This provides a basic level of security, hiding the internal structure of your local network from the outside world, but can cause issues with some online games or specific corporate services that require direct IP visibility.
Activation and basic network setup
The process of enabling Internet distribution on devices Redmi The app is as simplified as possible and accessible through the notification shade or the main settings menu. For a quick launch, simply pull down the top panel, find the "Access Point" icon, and enable it. However, for security and stability, we recommend further customization through the system menu.
To get to the configuration menu, you need to go to the section Settings → Wi-Fi HotspotThis is where you can manage your network name (SSID) and password. By default, the system generates a random name containing the device model, but it's best to change it to something unique to avoid confusion in crowded areas where other phones may be present. Xiaomi.
☑️ Access point security check
When choosing a password, be guided by cryptographic strength principles. Simple combinations like "12345678" or "qwerty" can be cracked in seconds. Use a combination of uppercase and lowercase letters, numbers, and special characters. MIUI Allows you to copy the password or display it as a QR code to quickly connect guests without having to dictate complex characters.
In this section, the "No Password" function is also available, which opens the network to everyone. Using an open hotspot is strictly not recommended in public places., as all user traffic becomes visible to anyone who connects to your network. This creates the risk of cookies, passwords, and personal correspondence being intercepted.
Selecting a frequency range and channel
One of the key features of modern smartphones Xiaomi The difference is the support of two frequency bands: 2.4 GHz and 5 GHz. The choice between them directly affects data transfer speed and signal coverage. Understanding the differences between these standards allows you to optimize network performance for specific tasks.
The 2.4 GHz band is more common and compatible. It penetrates walls better and has a longer range, but often suffers from congestion due to nearby routers, microwave ovens, and Bluetooth devices operating in this band. Speeds are lower, and latency can be inconsistent.
The 5 GHz band provides significantly higher throughput and operates in less noisy airwaves. It's an ideal choice for streaming high-definition video or online gaming. However, the 5 GHz signal has a shorter range and is less able to penetrate obstacles. If your laptop is in another room behind a concrete wall, the signal may drop out.
The setting is done in the menu Access point settings → Frequency rangeHere you can choose to force the use of a specific band or leave it in automatic mode. In automatic mode, the system will attempt to select the optimal option, but manual switching often produces better results in dense urban environments.
| Characteristic | 2.4 GHz band | 5 GHz band |
|---|---|---|
| Maximum speed | Up to 150-300 Mbps | Up to 800+ Mbps |
| Range | High (up to 50 m) | Medium (up to 20 m) |
| Penetration of walls | Good | Low |
| Airtime congestion | Very high | Low |
Managing connected devices
Controlling who is connected to your network is a crucial aspect of security and traffic management. In the interface Redmi A convenient list of all active clients is provided. It displays the devices' MAC addresses, the amount of data transferred, and the connection time.
The Blacklist feature allows you to instantly block unwanted devices. If you notice an unknown device in the list of connected devices, simply click on it and select "Block." This action will terminate the connection and prevent re-authorization from that MAC address until the restrictions are lifted.
A "Whitelist" feature is also available, which puts the network into maximum security mode. In this mode, only pre-approved devices can connect to the access point. Even with the correct password, an unauthorized user won't be able to access the internet until you manually add their device to the whitelist.
⚠️ Caution: When enabling the whitelist, be careful not to block yourself. Make sure your current device is added to the whitelist before activating this feature, otherwise you will lose control of the hotspot.
The system also allows you to limit the number of simultaneous connections. Typically, this value can be set between 1 and 10 devices. Limiting the number of clients helps maintain internet speed for primary users and reduces the load on the smartphone's processor, preventing overheating.
Traffic limits and energy saving
Mobile Internet is rarely unlimited, so the traffic control function in Xiaomi Redmi This feature is extremely useful. You can set a data threshold, after which the hotspot will automatically shut down. This saves you from unexpected charges and situations where your carrier throttles your speed.
The setting is in the section Access Point Settings → Traffic LimitHere you can set a daily or monthly limit. The system will track your usage and notify you when you approach the set limit. Once the limit is reached, WiFi sharing will stop, but mobile data on your phone will continue to work.
Power saving is another critical aspect. Hotspot mode is one of the most power-hungry processes on a smartphone. You can enable a setting in the settings to automatically turn off the hotspot if no device is connected for a certain period of time (e.g., 10 minutes). This prevents battery drain unnecessarily.
Additionally, keep in mind that with active GPS use, a bright screen, and background syncing, battery life in tethering mode may be reduced to 2-3 hours. For extended use, it's recommended to keep the phone connected to a charger, but monitor the case temperature, as simultaneous charging and Wi-Fi usage puts a strain on the battery.
Advanced settings and security
For advanced users MIUI offers a number of additional options. For example, you can hide the network's SSID, making it invisible to general scanning. In this case, connection is only possible by manually entering the network name and password. This adds a layer of security through stealth, although experienced users can still detect such a network with specialized scanners.
Setting a timeout is an important element. Some firmware versions offer the option to schedule the hotspot's operation time. This is useful if you use your phone as a temporary router for school or work during specific hours. Automation eliminates the need to manually enable and disable the feature.
Don't forget about the security of your smartphone itself. When a hotspot is active, the device becomes more visible on the network. Make sure your phone has the latest security updates, and that Bluetooth and NFC settings are set to only allow paired devices to be visible. It's also recommended to disable automatic connection to known WiFi networks to prevent your phone from attempting to act as both a client and a router, which could cause interface conflicts.
If you experience connection issues, the first step should always be to reset your access point to factory settings. This will clear saved device lists and restore default encryption settings, which often resolves compatibility issues with older laptops or gaming consoles.
Frequently Asked Questions (FAQ)
Why does the hotspot on my Xiaomi Redmi turn off quickly?
This is most often related to power saving settings. Check if "Power Saver" or "Sleep" mode is enabled, as these can forcefully close background processes. Also, make sure your hotspot settings don't have a timer set to automatically shut down when there are no clients.
Is it possible to share WiFi if the phone is connected to a WiFi router?
On most standard smartphone models, simultaneous operation of the WiFi module in client mode (receiving) and access point mode (distributing) is impossible due to hardware limitations of a single radio chip. However, some flagship models with dual WiFi modules or Wi-Fi Direct technology may support this feature, but it's not widely available in the mass market. Redmi When you turn on the access point, the WiFi connection to the router will be broken.
How to increase the range of an access point?
It's not possible to increase a smartphone's antenna power using hardware. However, you can improve the signal by removing any metal or thick rubber case that shields the signal. Placing the phone at an elevated position and away from sources of interference, such as microwaves or running engines, also helps.
Is there an extra charge for setting up a hotspot?
Telecom operators don't charge a separate fee for simply enabling tethering. However, all traffic consumed by connected devices is charged according to your mobile data plan. If you have an unlimited data plan with tethering restrictions, your operator may either block tethering or charge for it separately.