The Motorola Pebl U6 is a clamshell/flip mobile phone designed and developed by Motorola. The Pebl U6 was first shown in February 2005 originally as the V6 before being unveiled as the U6 in July 2005. It was named for its small and sleek appearance, as well as to evoke comparisons to a "pebble". The U6 is a GSM model: a CDMA variant, U6c, was announced in December 2006 for some markets.