Modern users are often faced with the need to print a document or photo directly from a smartphone, bypassing a personal computer. This is especially true for students, office workers and those who are used to working directly from mobile devices. Technology Android OTG (On-The-Go) allows you to directly connect your phone with peripheral devices, including printers, using a standard USB interface.
However, the process is not always completely automatic and requires preparation of both hardware and software. You'll have to figure out cable compatibility, your device's print protocol support, and choosing the right software. Understanding these nuances will save you time and nerves when setting up.
In this article we will analyze in detail all stages of the connection, from checking physical ports to setting up specialized applications. We will consider both the built-in functions of the system Androidand third-party solutions that may be required for older or specific models of printing devices.
Checking technical compatibility and preparing equipment
The first and most critical stage is checking hardware support. Not every smartphone, even the most modern one, can work in host mode to transfer data to a printer. You need to make sure that your device supports the standard USB OTG. Usually this information is contained in the specifications on the manufacturer's official website or in the instructions for the phone.
For the physical connection you will need a special adapter called USB OTG adapter. On one side it has a micro-USB or USB-C connector (depending on your phone), and on the other there is a full-fledged female USB-A port where the cable from the printer is inserted. The quality of this adapter plays a decisive role: cheap Chinese analogues often do not have the necessary contacts for data transfer.
☑️ Checking readiness for connection
It is also worth checking the printer itself. Make sure it has a USB Type-B port (square jack), which is the standard for connecting to computers. If you have a modern MFP, it may only have a network interface or Wi-Fi, then a direct connection via cable will be impossible without additional equipment.
⚠️ Attention: Using low-quality OTG cables can lead to unstable operation of the charging port or even a short circuit. Always check the integrity of the insulation and the tightness of the connectors before applying power.
Enabling OTG mode in the Android settings
On many modern smartphones, the function of supporting external devices is enabled by default, but in some shells, such as ColorOS OPPO Funtouch OS from Vivo or older versions of MIUI, it must be activated manually. Without this step, the phone will not see the connected equipment, even if everything is physically connected correctly.
To enable this option, go to the menu Settings of your device. Next, the path may differ depending on the model, but most often you need to look for the section Additional settings, Connections or simply search for settings by entering the query "OTG".
Find the switch with the name OTG connection or OTG Storage and move it to the active position. On some systems, this feature turns off automatically if the device is not used for 10 minutes, so keep an eye on the indicator in the notification shade.
If you cannot find the OTG setting in the menu, try connecting the cable right away. On some phones (for example, Samsung or Pixel), the system itself will ask permission to connect an external device when a signal is detected.
After enabling the function, insert the adapter into the phone and the printer cable into the adapter. If everything is done correctly, you should hear the characteristic sound of connecting the device or see a notification about connecting a drive (even if it is a printer, the system may first detect it as a storage device).
Choosing software for printing
The Android operating system does not have a universal built-in driver for all existing printers, unlike Windows. Therefore, to organize printing, you will need to install a special intermediary application. The choice of application depends on the brand of your printer and the version of the operating system.
The most universal solution is the official plugin Default Print Service (Default Print Service), which is often already pre-installed on the system. It supports the Mopria protocol, which is used by many modern manufacturers. However, for older models or specific tasks it is better to use proprietary utilities.
- 🖨️ HP Print Service Plugin —an ideal solution for HP brand devices, supports automatic detection and advanced color settings.
- 🖨️ Epson iPrint —a powerful tool for owners of Epson equipment that allows you to scan and print high-quality documents.
- 🖨️ Canon PRINT Inkjet/SELPHY —an official application for Canon printers that ensures stable operation via USB.
- 🖨️ NokoPrint is a universal third-party application that supports a huge number of models from different manufacturers, including older laser printers.
It is recommended to first try installing the application from your printer manufacturer, as it guarantees the best driver compatibility. If your printer is very old and there is no modern application for it, try universal solutions like NokoPrint or PrinterShare.
The setup process and the first start of printing
After installing the required application, you need to perform the initial communication setup. Launch the installed print plugin and go to its settings. Usually there is an item "Add a printer" or "Search for devices". Make sure that the connection mode switch is set to USB, not Wi-Fi.
The system should detect the connected device. If the printer is found, click on it to pair. In some cases, you may need to confirm permission to access the USB device - click "OK" in the pop-up window. After successful pairing, the printer status will change to "Ready" or "Connected".
Now you can try printing a test page. Open any document (PDF, image or text file), click the menu (three dots) and select Printing. Select your connected device from the list of available printers. Pay attention to the paper size and orientation settings, as they may be confused.
What to do if the printer is not detected?
If the application sees the cable, but does not see the printer, try restarting the phone with the cable connected. Also check that the printer itself is plugged in and that there are no errors (flashing lights) on it. Sometimes disconnecting and reconnecting the OTG cable helps.
Keep the charger handy or connect the phone to the network via a USB splitter, if possible.
Compatibility table and popular problems
Even if all instructions are followed, situations may arise when printing does not start. Below is a table with the most common symptoms and methods for eliminating them, which will help you quickly diagnose the problem.
| Problem symptom | Probable cause | Solution method |
|---|---|---|
| The phone does not see the cable | The mode is not turned on OTG or the adapter is faulty | Check the OTG settings, replace the cable with a known working one |
| The printer hums, but does not print | Lack of power from the phone port | Use an OTG cable with additional power |
| Document format error | Unsupported file type by driver | Convert file to PDF before sending for printing |
| Printing is delayed | Complicated graphics or slow processor | Reduce print quality or simplify the document |
⚠️ Attention: Laser printers consume significantly more energy when heating the stove than inkjet printers. Connecting a powerful laser printer directly to a smartphone without external power often leads to the phone turning off or rebooting the system.
Specific settings for different manufacturers
Different brands of smartphones have their own specific implementation of USB protocols. For example, devices Samsung often require manual confirmation of trust in the USB device each time it is connected. Owners Xiaomi i Poco sometimes have to enable USB debugging in the developer menu, although this is rare for regular printing.
For phones Huawei i Honor characterized by aggressive energy saving, which can “kill” the printing process in the background. Go to your battery settings and set your printing app to "Run in the background" without restrictions. This will prevent the connection from being interrupted while the print queue is being formed.
If you are using an Android tablet, the process is similar, but tablets are more likely to have full USB ports, which makes it easier to connect without adapters. However, the principle of operation of the drivers remains the same: without the correct software, the physical connection is useless.
The success of the connection is 90% dependent on the quality of the OTG adapter and the availability of the correct driver (application) for a specific printer model, and not on the Android version.
In some cases, manual installation of drivers via ADB may be required, but this is a procedure for advanced users and within the scope of this article will not be considered, since most modern plugins work automatically.
Frequently asked questions (FAQ)
Is it possible to connect a printer via USB if the phone only has USB-C?
Yes, this is possible. You will need an adapter from USB-C to USB-A (female). Such adapters are widespread and inexpensive. It is important that the adapter supports data transfer, and not just charging.
Why does the application write "Printer not found" even though the cable is connected?
Most likely, the OTG function is not enabled in the phone settings, or the application you are using does not support your printer model via cable. Try installing a universal application, for example, NokoPrint, and select the USB connection type in it.
Will the MFP scanner work when connected via USB to a phone?
In most cases, no. The print protocol (Mopria or proprietary drivers) and the scanning protocol are often separate. Most mobile apps only support printing. Scanning usually requires a Wi-Fi connection or special software from the manufacturer, which rarely supports USB scanning on Android.
Does connecting a printer affect the speed of the phone?
Insignificant. The main load falls on the USB controller and I/O system. If you are printing heavy graphic files, the phone may heat up a little, but this will not critically affect the overall speed of the system.
Is it possible to print if the printer is out of ink, but is connected via USB?
Technically, the connection will be established, but the printer will refuse to complete the task and will display an error on its display or through an application on the phone. The software cannot bypass the physical absence of consumables.