Smartphones of the series Redmi For many years, they have remained among the most popular devices on the market due to their excellent price-quality ratio. However, even time-tested models such as Redmi 4 (including Prime and Pro versions), issues may arise when setting up basic features, such as tethering. Users often need to quickly connect to the internet on a laptop or tablet while away from a fixed access point.
The process of activating an access point in the shell MIUI, installed on Xiaomi, has its own characteristics that differ from pure AndroidIn this article, we'll detail the steps to turn your phone into a fully-fledged router. We'll cover not only the basic setup but also the nuances of security settings, frequency band selection, and power optimization for stable operation.
It is important to understand that traffic distribution This significantly increases the load on the device's battery and processor. Therefore, before actively using it as a router, we recommend familiarizing yourself with energy efficiency recommendations. This will help avoid sudden battery drain at the most inopportune moment and ensure stable connection speeds for all connected clients.
Preparing the device and checking mobile traffic
Before you begin configuring the software, you need to make sure that the device is physically ready for operation. Mobile Internet Your SIM card must be active and have sufficient data, as connected devices can consume large amounts of data, such as when updating the system or watching high-definition videos. Check your SIM card balance and ensure data is enabled in your mobile network settings.
Particular attention should be paid to the cellular signal strength. If only one or two network bars are visible on the smartphone screen, the upload speed will be low and latency (ping) will be high. Under these conditions, the phone will work at its limits, trying to establish a connection, which will cause the casing to become very hot. Redmi 4 It is equipped with a metal case (depending on the modification), which dissipates heat well, but overheating is still undesirable for the battery’s longevity.
⚠️ Attention: Uncontrolled internet sharing can quickly exhaust your data plan. If you don't have an unlimited plan, be sure to set a traffic limit in your hotspot settings to avoid unexpected charges.
It's also recommended to close background apps that may consume data on your smartphone to avoid competition for connected devices. It's best to temporarily suspend navigation, cloud syncing, and automatic app updates. This will free up bandwidth and ensure priority network access for your laptop or tablet.
Step-by-step Wi-Fi hotspot activation
Enabling modem mode in the shell MIUI This is done through the main settings menu. The interface may differ slightly depending on the firmware version, but the logic remains the same. First, open the Settings app and find the section responsible for wireless connections. In newer interface versions, it's often called "Wi-Fi Hotspot," while in older versions, it's called "More" or "Advanced."
After navigating to the desired section, you'll see the "Wi-Fi Hotspot" toggle. Toggle this switch to start the wireless network creation process. By default, the system will suggest a network name based on your device model and generate a random password. You can change this information to simplify the connection or improve security, which we'll discuss in the next section.
☑️ Launching an access point
You can use the notification panel to quickly access the feature. Swipe down from the top to open the "Shutter" and find the "Tethering Hotspot" icon. If it's not on the main screen, swipe left or tap the panel edit button to add a shortcut. This allows you to toggle it on and off. Internet distribution in one touch, which is very convenient in everyday use.
In some cases, the system may ask for confirmation to enable the feature if it was previously disabled to save power. It's also worth noting that when the hotspot is activated, mobile internet automatically switches to sharing mode with other devices, and a corresponding icon appears in the status bar. Your device is now broadcasting a signal, making it detectable by other devices.
Configuring security settings and network name
Wireless network security is a critical aspect that cannot be ignored. Default settings Xiaomi propose the use of an encryption protocol WPA2 PSK, which is a reliable standard for protecting against unauthorized access. Leaving your network open (without a password) is not recommended, as this will allow anyone nearby to connect to your internet and potentially access data transmitted over the network.
To change the network name (SSID) and password, go to the "Access Point Settings" menu. Here, you can create a descriptive name that will appear in the list of available networks on other devices. The password should be complex enough to contain letters and numbers, making it difficult to guess using brute-force methods. Avoid using simple combinations like "12345678" or your date of birth.
⚠️ Attention: Changing the encryption type to older standards (for example, WEP) is only possible in hidden engineering menus or through third-party applications with root rights, but this is strongly discouraged due to the vulnerability of such protocols.
The same menu often includes the option "Hide device." If you activate this feature, your Redmi 4 will stop broadcasting the network name in the public list. To connect, other users will need to manually enter the exact network name (SSID) and password. This adds an additional layer of privacy, although it does complicate the process of connecting new devices.
Selectable frequency range: 2.4 GHz or 5 GHz
One of the important settings in modern smartphones is the choice of frequency range. Redmi 4 supports operation in the range 2.4 GHz, which provides good coverage and wall penetration, but has lower speeds and higher airtime congestion. Some modifications or firmware versions may switch to 5 GHz if the hardware supports it, which provides speed but a shorter range.
If your main goal is to share internet with your laptop for document processing or surfing in the next room, stick with the standard 2.4 GHz band. This range is compatible with all devices, even very old tablets and e-readers. Connection stability is more important than record-breaking speeds, especially if you're in an apartment building where the airwaves are clogged with signals from neighbors.
If you're in a private home or office with minimal outside networks, you can experiment with the settings. However, it's important to remember that The base model of Redmi 4 may not have hardware support for 5 GHz., and the presence of such an option in the menu does not guarantee its operation. Always check the specifications of your specific processor model and Wi-Fi module.
| Parameter | 2.4 GHz | 5 GHz |
|---|---|---|
| Transfer speed | Up to 150-300 Mbps | Up to 400+ Mbps |
| Range | High (up to 30-40 m) | Medium (up to 15-20 m) |
| Penetration of walls | Good | Low |
| Compatibility | 100% of devices | Only modern gadgets |
Managing connected devices and limits
Functional MIUI The hotspot not only allows you to share the internet but also control who's connected to it. The "Connected Devices" section in the hotspot menu displays a list of all devices currently using your data. You can see the device name and its MAC address, which helps identify "uninvited guests."
To protect against channel congestion and rapid battery drain, it's helpful to set a connection limit. By default, the system can allow up to 10 devices, but for a smartphone, 2-3 clients is optimal. Exceeding this limit can result in unusable speeds and excessive processor heating.
There's also a "Traffic Limit" feature. You can set a data cap (for example, 1 GB or 5 GB), after which the hotspot will automatically turn off. This is ideal for plans with limited data plans, preventing situations where your entire monthly data allowance is wiped out in one evening because of a movie downloaded on your tablet.
What should I do if my device won't connect?
If your laptop sees the network but won't connect, try forgetting the network on the laptop itself and re-entering the password. Also, check if your phone has a MAC address filter blocking a specific device.
Solving common problems and optimization
Despite the ease of setup, users may encounter a situation where the internet is not distributed or the connection keeps dropping. Most often, the problem lies in the mobile operator's APN (Access Point Name) settings. If mobile internet works on the phone itself, but pages don't load over Wi-Fi, try switching the network mode (for example, from 4G to 3G and back) or restarting the smartphone.
Another common cause of crashes is energy-saving system settings. MIUI is known for its aggressive battery optimization, which can kill background Wi-Fi sharing if the smartphone's screen goes dark. To avoid this, find the "No restrictions" option for Wi-Fi-related system processes in the battery settings, or simply keep the screen on while actively sharing.
If the problem persists, it might be worth resetting your network settings. This will return all Bluetooth, Wi-Fi, and mobile network settings to factory defaults, deleting any saved passwords and configurations that may have become corrupted. After the reset, you'll need to re-enter your access point password on connected devices.
⚠️ Attention: The settings interface and layout may vary slightly depending on the MIUI version installed. If you can't find the described option, search for "Pointer" or "APN" in the settings.
To extend battery life while sharing, it's recommended to reduce screen brightness to a minimum and disable unused communication modules, such as GPS and Bluetooth. It's also a good idea to remove your phone's case if it's thick and doesn't conduct heat well, to allow the device to cool naturally while sharing.
Frequently Asked Questions (FAQ)
Is it possible to share Wi-Fi if my phone has no data but I have a minute package?
No, you need a mobile data plan (GPRS/3G/4G) to use tethering. Call minutes or SMS messages cannot be converted into data. If your primary data plan is exhausted, the internet will not work, even if you have a positive balance and you can activate an additional plan.
Does Redmi 4 get very hot when distributing Wi-Fi?
Yes, heating is a normal physical phenomenon when the radio module and processor are actively operating. The metal case Redmi 4 It acts as a heat sink, so it may feel hot. It's recommended not to cover the phone with a cloth or place it on soft surfaces while sharing.
Why does my laptop connect to Wi-Fi but say "No Internet Access"?
Most often, this means the smartphone itself has lost its cellular signal or is running out of data. The issue could also be with incorrect DNS or APN settings. Try turning Airplane Mode on and off on your phone to reboot the communication module.
Is there a time limit for the hotspot to operate?
There's no system time limit; the hotspot will remain active until the battery drains or the data plan runs out. However, to protect against overheating, some software versions may automatically disable the feature when the processor reaches a critical temperature.
Is it possible to connect to Redmi 4 via USB instead of Wi-Fi?
Yes, Redmi 4 Supports USB tethering. To do this, connect your phone to your computer with a cable, go to the same hotspot settings, and turn on the "USB tethering" switch. This will ensure a more stable connection and simultaneously charge your phone.