M2017手机是全网通的，支持移动/联通/电信2G\3G\4G；
支持频段：
GSM：B2/B3/B5/B8
CDMA: BC0(800MHz)
CDMA2000: BC0(800MHz)
TD-SCDMA:B34/B39
WCDMA:B1/B2/B5/B8
TDD-LTE:B38/B39/B40/B41
FDD-LTE: B1/B3/B4/B7/B8/B26(B5)
TDD-LTE: DL CA:B39+B41/B39+B39/B38+B38/B40+B40/B41+B41
UL CA:B39+B39 /B40+B40/B41+B41
FDD-LTE: DL CA:B1+B3 /B3+B3/B7+B7
