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How to configure 3G EHWIC with Cisco 2921 ?

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Ayaerlee
How to configure 3G EHWIC with Cisco 2921 ?

Hi,
I have a Cisco 2921/K9 router with IOS image is c2900-universalk9-mz.SPA.151-4.M4.bin. When i try to installed EHWIC-3G-HSPA+7 with a working SIM card, it reports the SIM is removed. Why does this happen?