sim900 CSPN problem get provider <<fail>>

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micman

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I have a strange problem of sim900. When sending this command "AT+CSPN"
I receive this response:

+CSPN: "", 3
Click to expand...


strange because, the SIM900 is attached to the network and sends text messages and calls correctly !
Why?

I have this version; "Revision: 1137B02SIM900M64_ST_ENHANCE"

I inizialize the sim900 in this mode:
ATZ
->ok

AT+CMGF=1
->ok

AT+CSMS=0
->+CSMS: 1,1,1

AT+CSMP=49,167,0,0
->Ok

AT+CNMI=1,2,0,0,0
->Ok

AT+CLIP=1
->Ok

AT+CREG?
->+CREG: 0,1

AT+CSPN
->+CSPN: "", 3
Click to expand...


Why, should answer "vodafone" ! 8-O
 
Last edited by a moderator:

Hello, you tried use with other SIM card from other communication operator?
May be is just a error in the service tower vodafone you are using.
 
Last edited:

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