Frequency Band Comparison

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Frequency Band Microsoft Lumia 640 Dual SIM DTV
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InnJoo 4 Dual SIM LTE
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GSM 850 MHz Yes Yes
GSM 900 MHz (E-GSM) Yes Yes
GSM 1800 MHz (DCS) Yes Yes
GSM 1900 MHz (PCS) Yes Yes
UMTS B1 (2100 MHz) Yes Yes
UMTS B5 (850 MHz) Yes No
UMTS B8 (900 MHz GSM) Yes Yes
LTE B3 (1800 MHz +) No Yes

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