Smartphone Yota Yotaphone Black C9660 Dual Screen (E-ink on Back) 100% Factory Unlocked - International Version No Warranty Dual Screen, E-Ink reader on back Factory unlocked for use on any GSM network worldwide GSM 900 / 1800 / 1900 HSDPA 900 / 1800 / 2100 LTE 800 / 1800 / 2600 (Bands 3, 7, 20) *NOT USA LTE* 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.