[Hilo] For 3G module, how to know it’s 3G or 2G network?


#1

Answer: 1/ If you’ve already set <AT+COPS=0> automatic mode,
You can use <AT+COPS?> or <AT+KBND?> to know the current network used, for example:
AT+COPS?
+COPS: 0,0,“CHN-CUGSM”,2 —2 means 3G network is used.
OK
or
AT+KBND?
+KBND: 400,113 —400 means GSM 900 MHz is used now.
OK
But please note that the module may change 3G or 2G band according to the network environment.
By the way, if you want to use only 3G network, you can set <AT+KSRAT=2>.