You can change the device name of the machine, passkey, and so on from the Bluetoothsettings screen.Setting Bluetooth PrintingNoteCommunication is possible in a range of up to about 33 ft. / 10 m depending on the conditionsbelow. Printing speed may vary depending on the following conditions:Presence of obstacles between the communication equipment, and radio conditions.Presence of magnetic fields, static electricity, or electromagnetic interference.Receiver sensitivity and antenna performance of the communication equipment.Video files cannot be printed.Depending on your mobile phone, data saved on a memory card may not be printed.About transmittable dataDue to security settings on the mobile phone, downloaded content or photos downloadedfrom a URL attached to an E-mail cannot be printed.Depending on the size of a photo, it may take a while for this machine to start printing afterstarting wireless communication.Printed quality and orientation (portrait or landscape) are determined automaticallyaccording to the shot photo size.Depending on the photo size shot on the mobile phone, the edges of the image may be cutoff when performing borderless printing; the margin size may change when printing withborders.If the photo file is over 1.8 MB in size, it may not be possible to send the file.