I want to use both. Which would be better, have my SIM card provisioned for the iPhone and use a SIM card adapter to use my SG2 OR provision a full size SIM for the SG2 and cut it down to use in the iPhone 4s when I want to use it. I am leaning towards leaving the SIM on the iPhone 4s Unlimited plan and using the adapter when using the SG2. Visual voice mail would be the only problem. I do not expect to use the VVM but was wondering if I would be able to have AT&T remove VVM from my iPhone plan OR would I still be able to call my VM number on the Android to get my messages while under the iPhone plan. What do you think?