Modern smartphones such as Redmi 9 Pro, have long since ceased to be mere calling devices and have become full-fledged mobile hubs capable of providing internet access to laptops, tablets, and even gaming consoles. Wi-Fi hotspot functionality, or mobile hotspots, becomes critical in situations where a landline provider is unavailable or unstable. Owners of MIUI-based devices often encounter interface nuances that differ from stock Android, which can cause difficulties during initial setup.
In this article, we'll detail the process of activating modem mode, explore hidden frequency range settings, and help you solve common network visibility issues. Proper configuration This will not only ensure a stable connection but also significantly save your device's battery. You'll learn how to change default security settings and why it's sometimes worth sacrificing speed for compatibility with older devices.
Before you begin any technical manipulations, make sure your SIM card has a data plan with sufficient data. Carriers often limit the amount of data you can use for tethering or charge a separate fee for it, so checking your plan's terms is the first step to avoid any unpleasant surprises with your balance. Redmi 9 Pro It supports modern communication standards, but the effectiveness of distribution directly depends on the quality of the cellular network signal in your location.
Basic hotspot activation in MIUI
The process of enabling Internet distribution on the MIUI shell installed on Redmi 9 Pro, has been simplified as much as possible by the developers for quick access. The most obvious way is to use the notification panel, which is accessed by swiping down from the top. The "Hot Spot" widget is located here, but it only activates the function with the most recently used settings, not allowing you to change the parameters on the fly. For full customization, you need to go into the deep system menu.
Open the Settings app and find the section, which may be called "Wi-Fi Hotspot" or located within the "Connectivity & Sharing" category. This is where all the key toggles are located. MIUI interface The settings are grouped logically, but the item names may differ depending on the firmware version (Global, China, Russia). If you don't see an item right away, use the settings search by searching for "hotspots" or "modem."
In the menu that opens, you first need to set the network name (SSID) and password. By default, the system generates a random device name, such as "Redmi 9 Pro," and a complex password. Recommended Change the name to something more descriptive, especially if you're in a crowded area, to avoid confusing your network with someone else's. It's best to set a password of at least 8 characters, using letters and numbers to protect against unauthorized access.
☑️ Pre-launch check
After entering the data, simply toggle the top switch to the "On" position. The system will warn you that other users may connect to your network and offer security settings. Standard encryption protocol WPA2 PSK is the optimal choice for most situations, providing a balance between security and compatibility. Older devices may not see the network if you choose the latest WPA3, That's why WPA2 remains the universal standard.
Frequency range settings and device compatibility
One of the most important functions available to owners Redmi 9 Pro, is the ability to select the frequency range for the created Wi-Fi network. The smartphone can operate in two bands: 2.4 GHz And 5 GHzBy default, the "5 GHz preferred" option is often selected, which provides high data transfer rates but significantly reduces signal range and compatibility with older laptops or IoT devices.
If your connected devices can't see the network you've created, the problem is most likely a frequency issue. Many budget laptops and tablets from previous years are equipped with Wi-Fi modules that operate exclusively in the same frequency range. 2.4 GHzTo fix the situation, you need to find the “Access point settings” or “Advanced” item in the access point menu and manually switch the range to 2.4 GHzThis action will instantly make the network visible to a wide range of devices.
What is the difference between 2.4 GHz and 5 GHz?
The 2.4 GHz band provides better signal penetration through walls and greater range, but has lower speeds and is heavily congested by neighboring routers. The 5 GHz band offers high speeds and minimal interference, but the signal quickly fades away from the source and has difficulty penetrating obstacles.
The choice of frequency also affects power consumption. Operation in the mode 5 GHz requires higher transmitter power, which results in faster battery drain Redmi 9 ProIf you share the internet with a laptop that is located in close proximity to your phone, and you need maximum speed for streaming or downloading files, then the choice is 5 GHz justified. In other cases, especially when working with documents or surfing the web, 2.4 GHz will be a more energy efficient solution.
Managing Connected Users and Security
Securing a personal hotspot isn't just about setting a password; it also requires constant monitoring of connected devices. MIUI offers a convenient tool that lets you see in real time who's using your Wi-Fi. For this purpose, the "Connected Devices" section in the hotspot menu displays the MAC addresses and device names of subscribers. Regularly checking this list helps identify uninvited guests.
If an unknown device is detected, the system allows you to instantly block it by adding it to the blacklist. Once blocked, internet access for that device will be blocked, even if the correct password is known. This is an effective measure if you suspect your password has been compromised or guessed by a neighbor. However, the best practice remains to periodically change your password to a strong and unique one.
| Setting parameter | Recommended value | Impact on work |
|---|---|---|
| Frequency range | 2.4 GHz (for compatibility) | Increases radius and compatibility |
| Encryption protocol | WPA2-Personal | Provides basic data protection |
| Connection limit | 3-4 devices | Reduces the load on the phone's processor |
| Shutdown timeout | 10 minutes | Saves battery when there are no clients |
Another useful feature is setting a limit on the number of connected users. Even if you have unlimited data, using 5-6 devices simultaneously on a 4G/LTE mobile channel can lead to significant speed drops and overheating. Redmi 9 ProLimiting the number of clients to 2-3 ensures that your primary use case (e.g., a video call on a laptop) isn't interrupted by background updates on a passenger's tablet.
Save traffic and control data consumption
Mobile internet is rarely unlimited and incredibly fast, so monitoring data usage while tethering is critical. MIUI has a built-in "Traffic Limit" feature that allows you to set a threshold after which Wi-Fi hotspot access will automatically be disabled. This prevents situations where a background Windows update or downloading games on a tablet "eats up" your entire monthly data plan in a couple of hours.
To set the limit, go to the access point menu and find "Traffic Limit" or "Data Limit." Here you can set the amount in megabytes or gigabytes. The system will display a progress bar indicating how much is available. It is important to take into account, that the meter may have a slight error compared to the data of the telecom operator, so it is recommended to set the limit 5-10% less than your actual balance.
⚠️ Please note: Telecom operators often use DPI (Deep Packet Inspection) technology to determine traffic types. Wi-Fi tethering may be charged separately from regular mobile surfing, even if you have an unlimited data plan. Always check your plan terms in your operator account before using active tethering.
Additionally, it's worth disabling automatic app and system updates on connected devices, if possible. Many modern operating systems immediately begin syncing cloud storage and downloading updates when connected to Wi-Fi. Set your laptop or tablet to "Metered Connection" mode to prevent background activity that silently eats up precious memory.
Troubleshooting visibility and connectivity issues
Despite the reliability Redmi 9 ProUsers may encounter a situation where the phone is distributing Wi-Fi, but other devices can't connect to it or don't see the network at all. First, check that mobile data is enabled. The hotspot won't work if there's no connection to a cell tower. 4G or 5G should be lit in the status bar constantly.
A common issue is an IP address conflict or a glitch in the Android network stack. In this case, a simple but effective method can help: turn on airplane mode for 10-15 seconds and then turn it off. This will force the device to re-register with the carrier's network and reset the network settings. Once the signal is restored, try restarting the hotspot.
If the client device sees the network but says "Unable to connect" or is stuck on the "Obtaining IP address" stage, try changing the channel on the phone itself in the access point settings. In the advanced settings (often hidden under the "Configure" button or gear wheel), you can select a specific channel instead of "Auto." For the range 2.4 GHz Channels 1, 6, and 11 are considered the most stable. Trying these options often solves the incompatibility problem.
⚠️ Note: The MIUI interface is regularly updated. The layout of menu items, section names, and the availability of some features (such as selecting a specific Wi-Fi channel) may vary depending on the Android operating system version and the MIUI version. If you don't find the item you're looking for, search for it in the settings.
Optimizing power consumption and operating stability
The modem mode is one of the most energy-intensive modes for a smartphone. Redmi 9 Pro The device has a 5020 mAh battery, which is a good value, but when actively transferring data via Wi-Fi and simultaneously receiving a 4G signal, it can become hot and lose charge quickly. For extended use, it's recommended to reduce screen brightness or turn it off completely, as the screen is the second-largest power consumer.
MIUI's battery settings include an optimization feature that can aggressively close background processes. To ensure the hotspot works reliably and doesn't drop after 10 minutes, you need to add the Settings app or the hotspot system process to the optimization exceptions. This can be done in "Battery" → "Apps" → "Wi-Fi Hotspot" → "No Restrictions."
The "Shutdown Timeout" feature is also worth mentioning. In the hotspot settings, you can set a time after which Wi-Fi will automatically turn off if no one is connected. Setting it to 1 or 5 minutes will prevent you from forgetting to turn off Wi-Fi when leaving home and wasting battery while waiting for a connection.
Frequently Asked Questions (FAQ)
Is it possible to share Wi-Fi from Redmi 9 Pro if there is no SIM card?
No, to create a hotspot that provides internet, you need an active SIM card with mobile data enabled. Without a SIM card, the phone can create a local network, but it won't provide access to the global network. However, if the phone is connected to another Wi-Fi network, some firmware versions allow signal retransmission, but on stock MIUI, this feature is often blocked or requires root access.
Why does the laptop see the network, but the internet doesn’t work?
Most often, the problem lies in DNS settings. Try setting static DNS addresses on your laptop (for example, Google's: 8.8.8.8 and 8.8.4.4). Also, check if your phone has a data limit that has already been reached, or if your antivirus software is blocking incoming connections.
How many devices can be connected to Redmi 9 Pro at the same time?
Technically, MIUI allows for up to 10 simultaneous connections. However, given the bandwidth of a 4G mobile channel and the load on a smartphone's processor, comfortable operation is possible with only 2-3 devices connected. More devices will result in significant latency (ping) and slow speeds for each device.
Does Wi-Fi sharing affect the speed of mobile internet on the phone itself?
Yes, it does. The bandwidth is split between data transfer for connected clients and the needs of the phone itself. If laptops are actively downloading files, the page loading speed actually slows down. Redmi 9 Pro will also decrease, since the radio module operates in half-duplex mode.
How to hide your network name (SSID)?
In the advanced hotspot settings on some MIUI versions, there's an option to "Hide device" or "Hide SSID." If you enable this feature, the network won't appear in the general list. To connect, you'll have to manually enter the network name on the connecting device. This adds a layer of security, but reduces usability.