Has it been recognized before? What operating system (computer are you using)? Does it charge it, even though its not recognized?
+
Has it been recognized before?
+
+
What operating system (computer are you using)?
+
+
Does it charge it, even though its not recognized?
+
+
I would check to make sure you have the correct drivers installed and that you are using a data transfer cable, although the cables may seem to be a like some are not capable of transferring information and are meant only to charge the device.