May I ask is GSM sim908 need registration?

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JJ33

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Hi all,

I newbie of arduino and gsm/gps/gprs.. May i ask why we have to register GSM sim908 to network? What is function, and if I do not do so, what will happen? Thanks reply

JJ
 

It will automatically register to the network once you connect the SIM card and power it up

You can check using the following AT command
HTML: 
AT+CREG? // to check network reg.

AT+COPS? // to see which operator of Sim card you are using like for example - Vodafone
 

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