Forums / Embedded GSM Development / GSM 900A SIM problem - Rickey's World of Microcontrollers & Microprocessors

Discussion in "Embedded GSM Development" started by mcsan Mar 7, 2014.

mcsan

[ Fresher ]

Fri Mar 07 2014, 02:18 pm

#1

We are using SIM900A module. We are having two vodafone sim cards. Earlier purchased card works fine and we get +CPIN : READY message. However, newly purchased card shows +CPIN : NOT READY message. Actually, both cards are working fine when inserted into mobile phone.

Can you suggest what is happening?

Maulik

ajay_bhargav

Site Owner

Tue Mar 11 2014, 11:23 am

#2

You should contact simcom for this. It could be related to module firmware. What kind of sim card is it? 32k/64k?

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