HTC HD Mini. Display diagonal: 81.3 mm (3.2 "), Display resolution: 320 x 480 pixels. Internal memory: 512 MB, Flash memory: 384 MB, Compatible memory cards: microSD. Processor clock speed: 600 MHz. Networking features: GSM/HSPA/WCDMA, Operating frequency: 850/900/1800/1900/2100 MHz. Wireless technology: 802.11 b/g