Easy to use: According to the instructions, download the "Walk Print" application through your mobile phone; open the note printer box containing printing paper, put in the type of printing paper you need to use, after turning on the mini Bluetooth printer, connect to the mobile phone via Bluetooth The APP can print. If the sticker printer you received is defective, or you have any questions about our portable photo printer, please feel free to contact us and we will try our best to provide you with the best solution. Inkless Notebook Printer Mini: The size of the inkless pocket printer is 3.54x3.23x1.77 inches. This pocket printer is small and portable and can be put in your pocket or bag. The mobile phone portable printer can instantly print the phone recordings, photos and documents needed for photos. It can record your life, work and study anytime and anywhere. It is a great choice for students, travelers and anyone. The ideal accessory for anyone who needs to carry a portable mini printer. COMPLETELY EQUIPPED PRINTER KIT: The mini sticker printer in the package requires no ink, toner or ribbon. Use thermal paper instead of ink and save money, the mini thermal printer kit comes with 1 roll of paper (installed inside the mini picture printer), print black and white photos to doodle on, and share parent-child doodle time with your children. Wide range of uses: This mini inkless printer is suitable for printing black and white photos, documents, recordings, memos, web pages, labels, barcode stickers, sticky notes, notes, and can also be fixed for horizontal or vertical printing. Our mini pocket printer makes a great gift for birthdays, Christmas, graduations, travel, school gifts and Children's Day. Ideal for children, family members, students, friends, teachers, businessmen, travelers and others who need this practical mini photo