1. Introduction
The Phomemo M120 is a portable, monochrome thermal label printer designed for various labeling needs, including small businesses, home organization, and personal use. It utilizes advanced thermal printing technology, eliminating the need for ink or toner. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your Phomemo M120 label printer.

Image: The Phomemo M120 label printer shown with different sizes and designs of thermal label rolls, demonstrating its versatility.
2. Package Contents
Upon unboxing your Phomemo M120 label printer, please verify that all components are present:
- Phomemo M120 Label Printer
- 3 Rolls of Thermal Label Paper (1 roll 40x30mm, 1 roll 50x30mm, 1 roll 50x50mm)
- USB Cable for charging and connection to Mac OS/Windows
- User Manual (this document)

Image: The Phomemo M120 printer displayed alongside two additional label rolls, illustrating their respective dimensions (50x50mm and 50x30mm) and quantities per roll.
3. Setup Guide
3.1 Charging the Printer
Before first use, ensure the printer is fully charged. Connect the provided USB cable to the printer's charging port and a compatible USB power adapter (not included) or computer USB port. The charging indicator light will show the charging status.
3.2 Loading Label Paper
- Open the printer's cover by gently sliding or lifting it according to the device's design.
- Insert the thermal label roll into the paper compartment, ensuring the printing side of the labels faces upwards and the roll is aligned correctly.
- Pull a small length of label paper out past the cutting edge.
- Close the printer cover securely.
3.3 Connecting to Your Device
The Phomemo M120 supports both Bluetooth and USB connections.
Bluetooth Connection (iOS/Android)
- Download the "Print Master" application from the App Store (for iOS) or Google Play Store (for Android).
- Turn on the Phomemo M120 printer by pressing and holding the power button.
- Enable Bluetooth on your smartphone.
- Open the "Print Master" app and follow the in-app instructions to search for and connect to your M120 printer. The printer's name will typically appear as "M120" or similar.
USB Connection (Mac OS/Windows 7, 10, 11)
- Connect the printer to your computer using the provided USB cable.
- Install the necessary drivers for the Phomemo M120 printer on your computer. Drivers can usually be found on the official Phomemo website.
- Once drivers are installed, the printer should be recognized by your operating system and available for printing from various applications.

Image: A smartphone screen showing the "Print Master" application interface, connected via Bluetooth to the Phomemo M120 label printer, ready for label design and printing.
4. Operating Instructions
4.1 Using the "Print Master" App
The "Print Master" app is your primary tool for designing and printing labels with the Phomemo M120. It offers a wide range of features:
- Text Editing: Add and customize text with various fonts, sizes, and styles.
- Image Integration: Insert images from your device or the app's library.
- Barcode & QR Code Generation: Easily create and print barcodes and QR codes for inventory, pricing, or information sharing.
- Symbol Library: Access hundreds of symbols for various applications.
- Templates: Utilize pre-designed templates for common label types.
- Batch Printing: Print multiple copies of the same label efficiently, ideal for pricing or product labeling.
- Intelligent Recognition: The app features powerful voice and image recognition technology to enhance work efficiency, allowing for quick data input.

Image: Four panels illustrating the intelligent recognition capabilities of the Print Master app, including converting text from images, Excel batch printing, and scanning QR and 1D barcodes for quick label creation.

Image: The "Print Master" app interface displaying various design tools such as text, barcode, QR code, icon, border, templates, time, and picture options, along with examples of printed labels in different sizes.
4.2 Printing Labels
- Design your label within the "Print Master" app or your computer's software.
- Ensure the printer is powered on and connected to your device (Bluetooth or USB).
- Select the print option within the app or software.
- Confirm print settings, such as the number of copies.
- Initiate printing. The label will be printed and dispensed from the printer.
- Tear off the printed label along the cutting edge.
5. Maintenance
Proper maintenance ensures the longevity and optimal performance of your Phomemo M120 printer.
- Cleaning the Print Head: Regularly clean the thermal print head with an alcohol wipe or a specialized print head cleaning pen. Ensure the printer is off and cool before cleaning.
- Dust Removal: Use a soft, dry cloth to wipe the exterior of the printer. Avoid using abrasive cleaners or solvents.
- Storage: Store the printer in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: If storing for an extended period, charge the battery to about 50% to prolong its lifespan.
6. Troubleshooting
If you encounter issues with your Phomemo M120, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Printer not turning on | Low battery; Power button not pressed correctly | Charge the printer; Press and hold the power button for a few seconds. |
| Cannot connect via Bluetooth | Bluetooth off on device; Printer not in pairing mode; App issue | Ensure Bluetooth is on; Restart printer; Restart app; Re-pair device. |
| Poor print quality / Blank labels | Incorrect label loading; Dirty print head; Low battery; Faulty label paper | Reload labels correctly (printing side up); Clean print head; Charge printer; Try a different roll of labels. |
| Printer not responding | System crash; Connection issue | Restart the printer; Check Bluetooth/USB connection. |
| Labels jamming | Improper label loading; Damaged labels | Ensure labels are loaded straight; Remove any damaged labels. |
If the problem persists, please contact customer support as described in the "Support" section.
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | Phomemo M120 |
| Print Technology | Thermal |
| Printer Output | Monochrome |
| Connectivity Technology | Bluetooth, USB |
| Compatible Devices | Smartphone (iOS, Android), Computers (Mac OS, Windows 7/10/11) |
| Max Print Resolution (Monochrome) | 203 dpi |
| Max Monochrome Print Speed | 59 Pages per minute (equivalent to label output speed) |
| Supported Label Sizes | 40x30mm, 50x30mm, 50x50mm (and other compatible thermal labels) |
| Duplex Printing | No |
| Battery Composition | Lithium-polymer |
| Item Weight | 380.9 Grams |
| Product Dimensions (L x W x H) | 11.1 x 8.6 x 5.9 centimeters |
| Color | Black |
| Manufacturer | Phomemo |
| Country of Origin | China |
8. Warranty and Support
8.1 Return Policy
Phomemo supports free returns for 30 days from the date of purchase. Please refer to your purchase platform's return policy for detailed terms and conditions regarding refunds or replacements.
8.2 Customer Support
If you have any questions or require assistance with your Phomemo M120 label printer, please contact customer support through your purchase platform:
- Go to "Your Orders" on the Amazon website.
- Locate the order for your Phomemo M120 printer.
- Click on "Problem with order" or "Get product support".
- Select "Other issue" and then "Contact seller".
Alternatively, you can visit the product page on Amazon and click on the seller's name (e.g., "Phomemo YQ") to find a "Ask a question" button to contact them directly.







