Modern smartphones, such as the popular Redmi 9T, are equipped with a powerful set of wireless modules that allow data exchange without a router. One of the most popular, but not always obvious, features is Wi-Fi DirectThis technology enables a direct connection between two devices, delivering transfer speeds that are many times faster than those of traditional Bluetooth. Users often search for this option explicitly, expecting to see a dedicated toggle in the menu. However, MIUI's implementation of this feature has its own unique features.
In this article, we'll cover in detail how to activate this mode on your device, what system restrictions exist, and how to bypass standard blocking to gain maximum control over wireless interfaces. Understanding the operating principles local network It will help you not only transfer files but also set up document printing or stream your screen to a TV without lag. It's important to note that the standard interface may hide some technical details from the average user.
We'll cover both standard activation methods via the settings menu, as well as more advanced methods via the engineering menu or third-party utilities. This knowledge is essential if you plan to use your phone as a hotspot for specific tasks or connect peripherals that don't require internet access. Get ready to delve into the technical details that will transform your experience. Redmi into a universal tool for working with data.
What is Wi-Fi Direct technology and why is it needed?
Wi-Fi Direct — is a wireless communication standard that allows two devices to connect directly to each other, without the need for an access point or router. Unlike traditional Wi-Fi, where one device acts as a server (router) and others connect to it, Wi-Fi devices are peers. They negotiate connection parameters themselves, creating a secure communication channel. For the owner Redmi 9T This means the ability to instantly transfer large amounts of data.
The main advantage of the technology is speed. While Bluetooth is limited to a few megabits per second, Wi-Fi Direct It can reach speeds of hundreds of megabits, comparable to a wired connection. This makes the technology ideal for streaming 4K video, backing up your gallery, or installing multi-gigabyte games. Furthermore, the connection is faster and more stable than traditional bluetooth.
This technology has a wide range of applications on Xiaomi and Redmi smartphones. It is most commonly used for:
- 📁 Instant file transfer between phones of different brands without using the Internet.
- 🖨️ Printing documents on wireless printers not connected to a shared network.
- 📺 Stream images to Smart TVs using Miracast or DLNA protocols.
- 🎮 Local multiplayer gaming between multiple devices with minimal latency.
⚠️ Please note: Using Wi-Fi Direct drains the battery significantly faster than normal standby mode, as the radio module operates at increased power to ensure a stable signal.
Where to find the switch in the MIUI interface
Users migrating from other operating systems or older versions of Android often have difficulty finding a clear toggle. In stock Android, the option might be located in the advanced Wi-Fi settings. However, in the shell MIUI, installed on Redmi 9TThe interface logic has been changed. Xiaomi engineers have hidden manual control of this protocol, making it activated automatically when the corresponding apps are launched.
If you cross the path Settings → Wi-Fi → Additional settings, you may not find the familiar "Wi-Fi Direct" slider. This doesn't mean the feature has been disabled or removed from the firmware. The system activates the module. P2P (Peer-to-Peer) Only when required by the running app. For example, when trying to send a file via the built-in file manager or Mi Drop, the phone will automatically enable the necessary services.
However, for diagnostics or specific tasks, you may need to ensure that the module is working correctly. In some firmware versions, the hidden menu can be found by searching in the settings. Enter "Direct" or "P2P" in the search bar. If the system finds the appropriate section, you'll be able to see a list of available devices or the connection status. Otherwise, control is completely transferred to the operating system algorithms.
Step-by-step activation via system settings
Despite automation, there is a proven algorithm of actions that allows you to initiate a search for devices and prepare Redmi 9T to receive data. This method doesn't require superuser rights and is safe for the device's warranty. First, make sure the base Wi-Fi module is active, as Direct uses the same hardware.
Please follow these steps to prepare for connection:
- 📱 Unlock the screen and pull down the notification shade by turning on the Wi-Fi icon.
- 📂 Open the default File Explorer or Mi Drop app (now often called ShareMe).
- 👁️ Click the "Accept" or "Submit" button to start scanning your surroundings.
- 🔗 Select a device from the list or scan the QR code to pair.
When an application requests a connection, the protocol is activated in the background. Wi-Fi DirectYou may notice the Wi-Fi icon change or a notification about a P2P device connecting appears. If the connection fails, try turning Wi-Fi off and on again in the notification shade. Also, make sure location services are enabled on both devices, as this is a requirement in modern Android versions for finding nearby devices.
☑️ Check if Redmi 9T is ready for connection
Using the engineering menu for diagnostics
For more advanced users who need to check module status or force a test, the engineering menu is available. This is a hidden section of the system intended for technicians, but accessible to everyone. Be careful when changing settings in this menu, as incorrect actions may result in unstable operation of the radio modules.
To access the testing menu, open the Phone app (dialer) and dial the combination ##6484##This will open the CIT (Customer Integration Test) interface. Here you need to find the item related to Wi-Fi or WLAN. In some firmware versions, Redmi 9T The "Wi-Fi Direct" or "P2P Test" test is available. Running this test forces the search and listening mode.
Inside the test menu you can see technical information:
- 📡 Your device's MAC address in Direct mode.
- 📶 Signal level and frequency channel.
- 🔄 Connection status (Connected, Disconnected, Negotiating).
- 🆔 IP address assigned in the local P2P network.
⚠️ Caution: Do not change any settings in the engineering menu unless you are sure of their purpose. Reset the settings or simply exit the menu after running the diagnostics.
Third-party connection management applications
If the built-in tools don't seem informative enough or you want full control over the connection process, consider installing specialized software from the Google Play Market. There are apps that provide a user-friendly interface for management. Wi-Fi Direct, allowing you to see detailed logs and manage connected clients.
One popular solution is the app "WiFi Direct File Transfer" or similar third-party developers. They work on top of system APIs but offer more flexible settings. After installing such an app on Redmi 9T, you'll have access to features for creating a group, inviting devices, and setting speed limits. This is especially useful if you use your phone as a file server in an office or warehouse.
When choosing an application, please pay attention to the following criteria:
- 🛡️ Permissions to work with the local network and files.
- 🚫 No intrusive advertising that could interrupt the broadcast.
- 📲 Support for the latest Android versions (important for compatibility with MIUI).
- ⚡ Ability to work in the background without system restrictions.
Why does the system limit background work?
Modern versions of Android aggressively conserve battery life by forcibly closing background processes that actively use Wi-Fi. To ensure stable operation of file transfer apps, you must manually disable power saving for each app in the battery settings.
Comparison of data transfer methods on the Redmi 9T
To better understand when to use Wi-Fi Direct, and when it is better to resort to other methods, it is useful to compare their characteristics. Redmi 9T supports many protocols, and choosing the right tool can save you time and bandwidth.
Below is a table comparing the main characteristics of the different transmission methods:
| Characteristic | Bluetooth | Wi-Fi Direct | Mobile Internet | USB cable |
|---|---|---|---|---|
| Max. speed | up to 3 Mbit/s | up to 250 Mbps | depends on the tariff | up to 480 Mbps |
| Range | ~10 meters | ~50-100 meters | operator coverage | 1-2 meters |
| Battery consumption | Short | High | Medium/High | Charging the device |
| A router is required | No | No | No (SIM required) | No |
As can be seen from the comparison, Wi-Fi Direct It's the perfect balance between speed and wireless freedom. It's ideal for transferring a photo album or movie to another phone or TV box. However, for transferring a single small contact or a document a couple of kilobytes in size, Bluetooth or a messenger is quicker and easier.
Solving common connection problems
Even on such a stable device as Redmi 9T, situations may arise where devices don't see each other or the connection constantly drops. Most often, the problem lies in security or power saving settings. MIUI is known for its aggressive optimization, which can hinder the device discovery process.
If you encounter difficulties, please follow the troubleshooting steps below:
- 🔄 Reboot both devices - this clears TCP/IP stack errors.
- 🔒 Check if your antivirus or firewall is blocking local connections.
- 📶 Make sure the devices are no more than 10 meters apart.
- 📵 Disable VPN services that may intercept network traffic.
It's also worth keeping in mind that some older devices may not support the encryption standards used by default in newer Xiaomi firmware. In rare cases, temporarily disabling the Wi-Fi Direct password (if the app allows it) or resetting network settings may help. To do this, go to Settings → Connection and sharing → Reset Wi-Fi, mobile networks, and Bluetooth.
⚠️ Note: Resetting network settings will delete all saved Wi-Fi network passwords and Bluetooth pairings. Make sure you remember the passwords for important networks before performing this operation.
Frequently Asked Questions (FAQ)
Is it possible to connect Redmi 9T to a computer via Wi-Fi Direct?
Yes, it's possible, but your computer (Windows) must support Wi-Fi Direct technology. In Windows 10 and 11, this is often implemented through the "Projection" feature or dedicated file transfer apps (such as Phone Link or third-party software like Feem). The device won't appear in "My Computer" without the necessary intermediary software installed.
Does enabling Wi-Fi Direct affect internet speed?
If you use Wi-Fi Direct to transfer files between two phones, the internet connection on both phones may become temporarily unavailable or unstable, as the Wi-Fi module switches to P2P mode. If you use Direct to connect a printer, the primary internet traffic is usually unaffected, but the overall bandwidth is divided.
Is it safe to transfer banking information via Wi-Fi Direct?
The technology uses WPA2 encryption, making data interception difficult but theoretically possible for experienced hackers within range. For transmitting critical data (passwords, access keys), it's safer to use a cable or secure communication channel rather than a direct wireless link in a public area.
Why can't Redmi 9T see my old TV?
Your TV likely doesn't support Wi-Fi Direct or uses the outdated DLNA protocol, which requires being on the same Wi-Fi network. In this case, use the "Cast" feature in the Redmi notification shade, which will attempt to find a device via the Miracast protocol, which often works over Direct.
Is internet required for Wi-Fi Direct to work?
No, you don't need an internet connection at all. Wi-Fi Direct creates a local network between devices. You can be in the woods, on a plane, or in an area without cellular coverage, and file transfers will continue at full speed as long as the battery lasts.