GSM Working, Architecture, Applications

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Dual Sim, GSM+GSM , Dual Sim, GSM+GSM Dual Sim, Yes, Yes Sim Size, Nano+Nano SIM, Nano+Nano SIM Device Type Network SIM Slot Type 1 nano SIM + 1 nano SIM More Standby Mode Dual SIM Dual Standby More 2G GSM 8509001800MHz More 3G WCDMA B1B5

qt connect signal slot Network SIM Slot Type 1 nano SIM + 1 nano SIM More Standby Mode Dual SIM Dual Standby More 2G GSM 8509001800MHz More 3G WCDMA B1B5 Every GSM radio channel is 200 kHz broad and is further divided into frames of eight time slots The GSM system consists of mobile stations,