Introduction
This user manual provides comprehensive instructions for the operation, maintenance, and troubleshooting of your Phomemo LT12 Label Maker Machine. Please read this manual thoroughly before using the device to ensure proper function and longevity.
Product Overview
The Phomemo LT12 is a portable, rechargeable label maker designed for various labeling needs in home, office, and school environments. It features a QWERTY keyboard for direct input and Bluetooth connectivity for advanced editing via a smartphone application.

Figure 1: Phomemo LT12 Label Maker Machine and included accessories.
Key Features:
- Rechargeable Battery: Built-in 1200mAh lithium battery for portable use.
- Dual Input Methods: Integrated QWERTY keyboard and Bluetooth connectivity for app control.
- High Resolution Printing: 203 dpi print resolution for clear labels.
- No Label Waste: Designed to minimize tape wastage.
- LCD Backlit Screen: Ensures visibility in various lighting conditions.
- Versatile Label Types: Supports various label materials including plastic, thermal transfer, satin ribbon, and iron-on.

Figure 2: Advantages of the Phomemo LT12 Label Maker, highlighting its 203dpi resolution, minimal label waste, and rechargeable battery.

Figure 3: Key components of the Phomemo LT12 Label Maker.
Setup
1. Initial Charging
Before first use, fully charge the label maker using the provided Type-C charging cable. The device can continuously print for 2-3 hours after a full charge. The charging port is located on the side of the device.
2. Installing Label Tape
Open the tape cassette compartment cover. Insert the label tape cassette, ensuring the tape feeds correctly through the label exit slot. Close the cover securely.
Video 1: Demonstration on how to properly install the label tape into the LT12 label maker.
3. Bluetooth Connection (for App Control)
To utilize advanced features and personalized printing options, connect your Phomemo LT12 to your smartphone via Bluetooth using the "Print Master" application.
- Download the "Print Master" app from your phone's app store.
- Turn on Bluetooth on your smartphone and power on the Phomemo LT12 device.
- Open the "Print Master" app and search for available devices.
- Select "LT12" from the list to establish the connection.

Figure 4: Step-by-step guide for connecting the LT12 label maker to your smartphone via Bluetooth.
Video 2: Instructions on how to connect the Phomemo LT-12 label maker to a phone.
Operating Instructions
1. Basic Label Creation (Using QWERTY Keyboard)
- Power on the device.
- Type your desired text using the QWERTY keyboard. Use the "Shift" key for numbers and symbols.
- Press the "Print" button to print the label.
- Use the built-in cutter to cut the label after printing.
2. Advanced Editing and Printing (Using "Print Master" App)
Once connected via Bluetooth, the "Print Master" app offers extensive customization options:
- Font Customization: Choose from 163+ fonts and adjust font size.
- Symbols & Borders: Access 1600+ icon symbols and 287+ border styles.
- Multi-language Support: Supports over 30 languages.
- Saving Templates: Save frequently used label designs for quick reprinting.
- Print History: View your printing history for easy access to past labels.

Figure 5: Multi-functional editing capabilities available through the Print Master app.
Video 3: Guide on how to perform multiple edits on the label maker.
Video 4: Instructions for performing multiple prints.
Video 5: How to save label files for future use.
Video 6: Demonstrating how to print directly from the LT12 label maker with its keyboard.
3. Label Applications and Properties
The Phomemo LT12 supports various label types suitable for diverse applications. Labels are designed to be durable and functional.
- Versatile Use: Ideal for organizing jars, cupboards, files, cables, and creating name tags or gift labels.
- Durable Properties: Labels are waterproof, BPA-free, heat resistant, oil-proof, anti-scratch, and tear-resistant.
- Clean Removal: Labels can be removed without leaving residue.

Figure 6: Different types of labels compatible with the LT12, including adhesive, thermal transfer, satin ribbon, and iron-on.

Figure 7: Examples of how the LT12 label maker can be used for organization in home and office settings.

Figure 8: Key properties of Phomemo labels, including resistance to water, oil, scratches, and heat, along with strong adhesion.

Figure 9: Diverse applications for labels created with the LT12, from home organization to laboratory labeling.

Figure 10: Further examples of wide applications for the LT12 label maker, including creative and personal uses.
Maintenance
1. Cleaning the Device
Regularly clean the exterior of the label maker with a soft, dry cloth. Do not use abrasive cleaners or solvents. Ensure the label exit slot and cutter area are free from adhesive residue or paper dust.
2. Battery Care
To prolong battery life, avoid fully discharging the battery frequently. Recharge the device when the battery indicator is low. If storing the device for an extended period, charge it to approximately 50% and store in a cool, dry place.

Figure 11: Information on the rechargeable battery and performance of the LT12.
3. Self-Test Page
To check the print quality and ensure the device is functioning correctly, you can print a self-test page.
Video 7: How to print a self-test page to verify printer functionality.
Troubleshooting
If you encounter issues with your Phomemo LT12 Label Maker, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery or no charge. | Connect the device to a power source using the Type-C cable and charge it fully. |
| Poor print quality / Faint print. | Print head dirty or tape incorrectly installed. | Clean the print head. Ensure the label tape is installed correctly and is not jammed. Try printing a self-test page. |
| Cannot connect via Bluetooth. | Bluetooth is off on device/phone, or app issue. | Ensure Bluetooth is enabled on both the label maker and your smartphone. Restart the app and the label maker. Refer to the "Bluetooth Connection" section. |
| Label jam. | Tape not properly aligned or foreign object. | Open the tape compartment, carefully remove any jammed tape, and re-install the cassette. Ensure no foreign objects are obstructing the path. |
| Cannot delete characters. | Software or input issue. | Use the "Clear" or "Delete All" button on the device. If using the app, ensure you are using the correct delete function. |
Video 8: Quick guide on how to delete all characters on the label maker.
Specifications
| Feature | Detail |
|---|---|
| Model Name | LT12 |
| Brand | Phomemo |
| Product Dimensions | 8.85"D x 4.29"W x 3.07"H |
| Item Weight | 10.3 ounces (291 Grams) |
| Connectivity Technology | Bluetooth |
| Printing Technology | Thermal |
| Maximum Print Resolution | 203 dpi |
| Printer Media Size Maximum | 12mm x 4m |
| Display Type | LCD |
| Battery | 1 Lithium Ion battery (included) |
| Included Components | LT12 handheld label maker with keyboard, User manual, Type-C cable, 1/2-inch black on white label tape |
Warranty and Support
The Phomemo LT12 Label Maker Machine comes with a limited warranty. For detailed warranty information, product support, or to purchase additional supplies, please visit the official Phomemo website or contact their customer service.
Manufacturer: Goknu
Brand: Phomemo





