Samsung SGH-X638 Internal memory: 23 MB; Primary display: TFT 1.7" 160 x 128 pixels 65K colors QQVGA, 125 ppi; Secondary display: No; Memory Card: No; Primary camera: 0.3 MP 640 x 480 pixels; Video: 176 x 144 pixels; Secondary camera: No; Headphone: No; WI-FI: No; NF...