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Baseband

Chris951

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What is a baseband and what does it do? Does upgrading it improve anything? I understand that it upgrades when you upgrade your iOS. What should mine be with my iPhone 4 on sprint? It says 3.0.03 on modem firmware. Is this the most current one? Sorry if this is a dumb question but I just really wanna know lol
 

necronen

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I don't know either more about it.. But it is the radio chip the phone uses to communicate to a specific network. Which deals with phone calls and sending SMS, 3G communication.

In short, it is called modem.
 
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