Frequency Band Comparison

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Frequency Band BBK X21s Dual SIM TD-LTE CN V1814A (BBK V1814)
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Coolpad ivvi F1 Dual SIM TD-LTE 16GB
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GSM 850 Yes No
GSM 900 (E-GSM) Yes Yes
GSM 1800 (DCS) Yes Yes
GSM 1900 (PCS) Yes Yes
UMTS B1 (2100) Yes Yes
UMTS B2 (1900 PCS) Yes No
UMTS B5 (850) Yes No
UMTS B8 (900 GSM) Yes Yes
UMTS B34 (TD 2000) No Yes
UMTS B39 (TD 1900 +) No Yes
LTE B1 (2100) Yes Yes
LTE B3 (1800 +) Yes Yes
LTE B5 (850) Yes No
LTE B8 (900) Yes No
LTE B34 (TD 2000) Yes No
LTE B38 (TD 2600) Yes Yes
LTE B39 (TD 1900 +) No Yes
LTE B40 (TD 2300) Yes Yes
LTE B41 (TD 2500) Yes Yes
CDMA BC0 (800) No Yes

Current Listings for X21s Dual SIM TD-LTE CN V1814A (BBK V1814)


Current Listings for ivvi F1 Dual SIM TD-LTE 16GB