I'm not sure if that was decided. The jury decided the patents were exhausted because Apple's suppliers had already been licensed. (Qualcomm I think).

It is the general case that you can't demand two licenses for the same patent in the same product. If the 3G chip has a license then so does the phone it is built into.

Patent exhaustion.

Qualcomm had a license to Samsung patents which is the component supplier that Apple was using.