The price is simply unbeatable, and that's what made me decide to buy this cable to give a facelift to a Sony Ericsson V640i by keeping it updated (firmware unfortunately not installable Bluetooth); I could even "de-brander" phone, which although legally unlocked at SFR, could not connect to internet with the SIM card of other operators.
The V640i has become K630 at the same time and is more reactive: handy as a backup phone, and for all those who do not need a smartphone.