smart landline Desktop IP Phone Video VoIP service inside- Android 7.0 4G- 3G WIFI SIM card for conference call

Brand Name: comfast
Working Frequency: 4G bands 2600/2100/1800/800/700
Model Number: F900
Port Number: 4
Type: 2G 3G 4G
Working Frequency: Support 4G bands 2600/2100/1800/800/700 MHz or WIFI connection
Model Number: F900