HTC One E8 16GB Unlocked GSM Carrier International Version (Blue) For GSM Carrier Only , accept Nano SIM card like T-Mobile , ATT.... (not for CDMA carrier Like Verizon , Sprint ...Please check with your carrier before purchase. Network:3G (H+) , Not 4G Or LTE for U.S Carrier Operating System: Android Storage Capacity: 16GB , Expansion SD card slot supports microTM SD memory card for additional storage (card not included). box include : Phone , charger ,cable ,headset and manual papers. This cell phone may not include a US warranty as some manufacturers do not honor warranties for international version phones. Please contact the seller for specific warranty information.