4G Lte Android 4.4 Volte VoIP Desk Phone

4G LTE Android 4.4 VoLTE VoIP Desk Phone  2G Band:B2,B3,B5,B8  3G Band:B1,B2,B5B,B8  4G Band FDD:B1,B2,B3,B4,B5,B7,B8,B20,B28a,B28b;4G Band TDD:B38,B39,B40,B41  Frequency bands can be adjusted as requiredWIFI Standard:IEEE 802.11b/g/nVoLTE VoiceFM Radio,SMS,MP3Android 4.4Dot-matrix LCD with back lightLCD display contents include signal strength, battery charging status,missed phone call,new SMS, WIFI Hotspot, signal strength,power status,time, date, operator informationPhone bookCaller IDMemory store 20 incoming, 20 outgoing and 20 missed callsDifferent ringing tone for incoming call and SMSSpeed dial,hands free, redial, call divert, call waiting, call barred. Keypad tone volume adjustableCalendar, alarm clock, calculatorRechargeable backup battery, Standby:120hrs  talking time