frequency
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2G:GSM900 up/down
890-915MHZ/935-960MHZ
DCS:1800:up/down
1710-1785MHZ/1805-1880MHZ
4G:TD-LTE1880-1900MHz、
TD-LTE2320-2370 MHz、
TD-LTE2575-2635 MHz

2G : GSM900 up/down:
890-915 MHz/935-960 MHz
DCS:DCS1800 up/down:
1745-1755 MHz/1840-1850 MHz
3G : W-CDMA up/down:
1940-1955 MHz/2130-2145 MHz
4G: TD-LTE up/down:
2555-2575 MHz,2300-2320MHz
FDD-LTE up/down:
1755-1765MHz,1850-1860MHz

2G:CDMA800 up/down
825-835MHZ/870-880MHZ
3G:FDD up/down
1920-1935MHZ/2110-2125MHZ
4G:TD-LTE 2600、
4G:FDD-LTE 1800/2100MHz
TD-LTE 2370-2390MHZ
2635-2655MHZ
FDD-LTE 1765-1780MHZ
1860-1875MH