T-Mobile Samsung Gravity 2 Smartphone Orange Quad-band GSM phone for good global voice connectivity (850/900/1800/1900 MHz bands) Memory expansion via microSD card slot with support for optional cards up to 16 GB Audio Postcard feature allows you to add a personalized message to a photo before sending it to friends and family Personal e-mail with support for AOL, Yahoo! and Gmail Speaker phone for easy hands-free communication