SD CardsIssue Possible Cause & SolutionThe SD card is notrecognized.• The SD card is not formatted according to the SD standard.→ This unit does not support SD cards that are not formattedaccording to the SD standard. Format the SD card with this unit,and then try again (Page 119).I cannot save to an SD card.• The SD memory card is not compatible with this unit.→ Use an SD card that is compatible with this unit (Page 118).• The SD card is not formatted correctly.→ Format the SD card (Page 119).• The SD card is not completely inserted.→ Remove the SD card, and then reinsert the card, making sure toinsert it completely (Page 119).• The write-protection switch on the SD is set to the "lock" position.→ Remove the SD card, set the write-protection switch on the card tothe unlock position, and then reinsert the card (Page 119).Images saved on the SD cardare not displayed on the[Gallery] screen.• The image size is unsupported.→ For the Phone screen wallpaper, use an image with a resolution of800 ´ 455 pixels (Page 89).Music saved on the SD cardis not displayed on theringtone selection screen.• You have not registered the file to the ringtone list in the Musicapplication.→ In the Music application, register the music you want to use as aringtone to the ringtone list, and then add it as a ringtone in [Melodyfor Phone ringtone] (Page 92).When I install a certificate, thefile names of files on the SDcard are not displayed.• Change the file name to have 9 characters or more, and then try again.Thumbnails of images on theSD card are not displayed, ordifferent images aredisplayed.• The SD card was not unmounted before it was removed from the unit.→ Unmount the SD card before removing it (Page 112).To display the correct thumbnail images, consult youradministrator.USB DevicesIssue Possible Cause & SolutionThe USB device I connecteddoes not work.• You connected a USB device that this unit does not support.→ This unit supports only standard USB keyboards.• The maximum number of chained hubs has been exceeded.→ The maximum number of hubs you may chain together is 2.The keyboard I connecteddoes not work.• The USB keyboard is not connected correctly.→ Check whether the keyboard is connected correctly (Page 100). Ifit is not connected correctly, disconnect it, and then connect itagain.Document Version 2011-09 Operating Instructions 127Troubleshootingwww.InternetVoipPhone.co.uk | sales@internetvoipphone.co.uk | 0800 088 4846