1. Insufficient battery power and print density in the print preview of the app.
2. Clean the print head with alcohol.
3. Please replace a new paper roll printing, moisture in the paper roll can result in blurred prints.

Please use thermal paper and install the paper roll correctly. The printing side should face the print head. Paper roll installation video HERE 

1. Download the Phomemo app HERE
2. Turn on the printer and activate Bluetooth on your phone within 3 meters of the printer.
3. Open the Phomemo app and connect to the printer via Bluetooth.
4. Alternatively, turn on the printer and print a QR code by double-clicking the power button. Then, in the app, click "Scan QR code" to connect via Bluetooth.

Video instructions HERE or follow the following instructions
1. Turn on the printer without putting in any paper.
2. Press the power button for 10-20 seconds until the indicator light flashes twice, and then release the power button to complete the paper learning process.
3. Reload the paper and long press the power button to turn on the printer.

1. The paper roll might get stuck, please tighten the paper roll and install it again.
M02 Paper roll installation video HERE
2. There is a problem with the Bluetooth transmission speed between the printer and your phone, please try printing on another phone.

1. Ensure the power socket is live, use a charging cable and head with an output of 5V-2A.
2. The charging cable and head should be fully plugged.
3. The printer's indicator light will flash while charging. It will stop flashing once fully charged.

1. Red light always on
Please connect the app, and then click “Print” to check what information is displayed in the app.
• If the app prompts "No paper in the printer", please follow the question before.
• If the app prompts “Printer cover open”,follow the instructions in the app to close the printer cover firmly.
2. Flashing red light
• A flashing red light indicates low battery level. Please charge the printer in time.

1. Please charge the printer and check whether it has set an automatic shutdown time.
2. Please connect and click the top right corner of the homepage, and then select the model of the connected printer in the list to enter the "Manage Devices" page. On this page, you can check whether the auto shutdown time is set.