The Sony Ericsson W610i phone is based on the Sony Ericsson K550 and Sony Ericsson K610i. It is a quad-band GSM phone, but it does not offer 3G (UMTS or HSDPA).
In terms of its technical specifications, the Sony Ericsson W610i mobile phone is based on the designs of the Sony Ericsson K550 and K610i models. As a result, it operates on four GSM frequency bands but does not support 3G wireless communication.