The new Samsung SCH-i830, an upgrade to the i730, adds GSM for global roaming on both CDMA and GSM networks, at the expense of Wi-Fi. All other features are identical, including EV-DO high-speed data, a QWERTY mini-keyboard, and an SDIO card slot. Other features include Bluetooth, infrared, "3D" stereo speakers, and speaker-independent voice dialing.