Polyphonic ringtones are supported by these mobile phones:
Alcatel: 512
LG: B2100, C3400, F2400, KE500, KG110, L5100, U8150
Motorola: C975, V1050, V620, V975
Nokia: 1101, 2118, 2125i, 2650, 3105, 3310, 3330, 3410, 3510, 3510i, 5100, 5210, 5510, 6030, 6060, 6100, 6101, 6102, 6110, 6155, 6210, 6230i, 6233, 6234, 6310, 6310i, 6510, 6708, 7110, 8910, 8910i, 9210, 9210i, E60, E60-1, E61, E61-1, E90, N71, N72, N80, N91
Panasonic: VS3
Samsung: P910, U700, U700-Vodaf, ZV60-Vodaf
Siemens: C75, CF62, CF75, SL56
SonyEricsson: D750i, K600I, S710a, T200, T618, W550i, W800i