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Into the App of “POS-Printer”, select the paper width as below:
(Image 3)
4. Select the way of communication of printers, “Bluetooth” or “WIFI”:
(Image 4)
5, If connect with Bluetooth, then you can click “ Select Printer” first, you will
search the “Bluetooth Printer” (the default name of printer is Bluetooth Printer),
click it to be connected.