HTC 8S Red - Windows Phone 8S GSM Unlocked For GSM Carrier Only , accept Micro SIM card like T-Mobile , ATT.... (not for CDMA carrier Like Verizon , Sprint ...Please check with your carrier before purchase. Network:2G(E) Network for GSM 850 / 900 / 1800 / 1900 and 3G(H) for HSDPA 900 / 2100 Operating System: Windows 8 phone Storage Capacity: 4GB , Expansion SD card slot supports microTM SD memory card for additional storage (card not included). box include : Phone , charger ,cable ,headset and manual papers.