Modern Redmi smartphones have long since become fully-fledged work tools, allowing you to complete office tasks without a computer. The owner of this model Redmi 9T can easily organize wireless printing of documents, photos or web pages using a standard protocol WiFiThis eliminates the need to search for USB cables or transfer files via cloud storage.
The connection process is based on the fact that both devices—your phone and printer—are on the same local network. In the operating system Android 10 (with shell MIUI 12), which is installed on Redmi 9T By default, the necessary drivers and services for detecting printing devices are already installed. You don't need to be a system administrator to set this up in a couple of minutes.
However, there are a few nuances depending on the age of your printer and the availability of technology support. Wi-Fi DirectIn this article, we'll cover all possible scenarios: from automatic detection to manual IP address setup. Understanding these differences will help you avoid common mistakes when your phone simply doesn't detect your device.
Checking compatibility and preparing equipment
Before you proceed to your smartphone settings, make sure your printer is ready for wireless operation. Most modern models HP, Canon, Epson And Brother support standards Mopria or AirPrint, making them compatible with Android out of the box. If your printer is more than 10 years old, it may need built-in WiFi or an external adapter.
A critical requirement is that the devices are on the same subnet. This means that Redmi 9T The router and the printer must be connected to the same router. If you have a dual-band router at home, broadcasting both 2.4 GHz and 5 GHz networks, make sure there is no client isolation between them, although this is rare in home environments.
⚠️ Attention: Some corporate networks or router guest modes have a "Client Isolation" feature. In this mode, devices are prohibited from communicating with each other, and printing is impossible even if the Wi-Fi is on.
To get started successfully, please follow these steps:
- 📶 Turn on the printer and make sure the WiFi indicator is on or blinking, indicating it is ready to connect.
- 📱 Connect yours Redmi 9T to the same WiFi network to which the printer is connected.
- 🔄 Make sure location services are enabled on your phone (some versions of Android require this to search for devices on the network).
- 🔌 Make sure your printer has cartridges and paper installed to ensure your test print is successful.
Using Android's built-in printing service
The operating system installed on Redmi 9T, has a built-in plugin Default Print Service, which automatically scans the network for printers. In 90% of cases, you won't need to download additional apps from manufacturers. The system automatically detects the device model and selects the necessary color profiles and paper sizes.
To activate the service, go to the settings menu. The path may vary slightly depending on the MIUI version, but it's usually located in the Connections and SharingYou need to find the item here. Seal and make sure the switch Default Print Service activated. If the service is disabled, the phone will not respond to print requests.
Once the service is enabled, the system will begin searching. If the printer supports the technology AirPrint or Mopria, it will appear in the list of available devices with the "Ready" status. If you see your printer but the status is "Offline," check to see if the device is in sleep mode. Some models take a long time to wake up from power saving mode.
Sometimes, manual activation of a brand-specific plugin is required. In the same "Print" menu, you may see listings like "HP Print Service Plugin" or "Kyocera Print Service." These can also be enabled if the standard service can't handle the formatting of complex documents.
Setting up via the manufacturer's application
In situations where standard Android tools are unstable or access to advanced features (scanning, checking ink levels, calibration) is required, it is better to use proprietary software. Redmi 9T All popular apps in the store are available Google PlayThey often provide a more stable connection and better color reproduction.
Let's look at the steps for popular brands. After installing the app, you'll need to create an account or sign in to an existing one. This is necessary to save print profile settings to the cloud, which is convenient when using multiple devices.
- 🖨️ HP Smart: The app automatically detects HP printers on the network. Click "Add a printer" and follow the on-screen instructions.
- 🔴 Canon PRINT Inkjet/SELPHY: Allows you not only to print, but also to scan documents directly into PDF or JPEG format.
- 🟢 Epson iPrint: Offers easy layout customization for borderless 10x15 photo printing.
- 🔵 Brother iPrint&Scan: Optimized for document processing and features a simple paper source selection interface.
When you first launch the app, it will ask for permission to access your local network. Be sure to click "Allow" or else Redmi 9T won't be able to send data to the printer. If the app says "Printer not found," try using the "Search by IP address" feature and entering the numbers manually.
⚠️ Attention: App interfaces are constantly being updated by developers. Button locations may change, so look for the "Device Settings" or "Add Printer" sections.
Printing Documents and Photos: A Step-by-Step Guide
The process of printing from your phone is intuitive and standardized across most apps. Whether it's viewing a photo in the gallery, a document in Google Docs or a page in a browser ChromeThe steps are similar. The key is to find the universal "Share" or "Print" menu.
Let's look at an example of printing a document from a PDF file. Open the file, click the three dots in the corner of the screen (action menu), and select SealThe system will open a preview where you can select the number of copies, page range, and color depth. Make sure your printer is selected at the top of the screen, not "Save as PDF."
☑️ Check before printing
The process is similar for photos, but requires attention to quality settings. In the print menu, click the down arrow next to the printer name to expand additional settings. Here, you can select the paper type (glossy, matte) and quality (high, standard). High quality printing will take longer, but the results will be significantly better.
If you are printing a web page from your browser, use the menu Settings → Share → Print. Browser Chrome on Redmi 9T Automatically converts the page to a print-friendly format, removing unnecessary advertising and navigation elements.
Solution: The phone doesn't see the printer.
Despite the simplicity of the technology, glitches sometimes occur. The most common problem is Redmi 9T The printer simply isn't showing up in the list. This could be due to a temporary outage of network services or the DNS cache. First, try restarting your router, phone, and the printer itself. This resolves 70% of connection issues.
The second common cause is using different Wi-Fi frequencies. If the router broadcasts 2.4 GHz and 5 GHz networks with different names (SSIDs), and the printer is connected to one and the phone to another, they may not "see" each other due to the router's security settings. Try temporarily switching both devices to the same frequency.
It's also worth checking your router's firewall settings. Sometimes ports required for the printing protocol (usually port 9100 or 631) are blocked. If you use antivirus software on your phone, make sure it's not blocking local connections.
Below is a table of possible errors and how to solve them:
| Error | Possible cause | Solution |
|---|---|---|
| The printer is in the "Waiting" status. | Out of paper or lid open | Check the physical condition of the printer |
| Connection error | Incorrect WiFi password or weak signal | Reconnect the printer to the network |
| The document does not print. | Incompatible file format | Save the file as PDF and try again. |
| Printing is slow | The WiFi channel is overloaded | Bring the devices closer to the router |
Secret reset method
If all else fails, find the Reset button on the back of the router and press it with a paperclip for 10 seconds. Note: This will reset all router settings to factory defaults, including the WiFi password.
Alternative methods: USB and cloud printing
If the WiFi network is unavailable or unstable, Redmi 9T supports printing via cable. You'll need an adapter for this. OTG (USB Type-C to USB-A). Connect the printer cable to the adapter, and then connect the adapter to your phone. The system will automatically detect the device as a USB printer.
To work via USB, you may need to enable USB debugging, although modern versions of MIUI often do without it. In the menu Settings → About phone Tap 7 times on "MIUI Version" to activate the developer menu if direct connection does not occur.
Another option is cloud printing Google Cloud Print (or its modern equivalents, as Google's service is gradually being replaced by native solutions). This method allows you to print from your phone to a printer located anywhere in the world, as long as the printer has internet access. This requires first registering the printer with your Google account on your computer.
⚠️ Attention: When printing via an OTG cable, your phone may drain quickly as it powers the printer controller. It is recommended to keep Redmi 9T connected to the charger during large volume printing.
Using third-party cloud services such as PrinterShare or NokoPrint, is also an available option. These applications often have their own drivers and can penetrate the security of some complex corporate networks using their own tunnels.
Questions and Answers (FAQ)
Is it possible to print from Redmi 9T if the printer is old and does not have WiFi?
Yes, this is possible. You'll need to buy an OTG cable and connect the printer directly to your phone. You can also connect an old printer to your computer, share it on your local network, and then your phone will be able to print via WiFi to your computer, which will then send the print job to the printer.
Why is the text cut off at the edges when printing from a phone?
This happens because the document margins and the printer's printable area do not match. In the print menu on Redmi 9T Find the "Scale" or "Margins" setting and select "Fit to Page" or reduce the scale to 95%. Also, check that the correct paper size is selected (A4 instead of Letter).
How to find the printer IP address for manual configuration?
The printer itself usually has a "Report" button or a combination of buttons (often "Cancel" + "Wireless") that prints a network configuration page. It will list the IP address, for example, 192.168.1.45. You can also find the address in the router app's list of connected clients.
Does Redmi 9T support double-sided printing?
Support for duplex printing depends primarily on the printer itself. If your printer has automatic duplexing, a corresponding "Duplex" checkbox will appear in the phone's print menu. If your printer only supports manual duplexing, your phone will prompt you to print the odd-numbered pages first and then ask you to flip the paper for the even-numbered pages.