We Are looking for GSM MOBILE PHONES Dual Band (850-1900 MHz) or tri-band, quad-band,  Unlocked,  No carrier logo for the following references:  SAGEM MY-401L Sony Ericsson Z-520 Sony Ericsson K790i Sony Ericsson K310A Sony Ericsson W610 Sony Ericsson Z310 Motorola V-551 Motorola C139 Motorola C122 Motorola F3 Motorola W375 Motorola L6i Motorola L7i Motorola U6 Motorola W220 LG-C1500 Motorola V190 Motorola K1 Motorola W510