I have an upcoming trip to the UK at the end of June and have gone through the step of getting the unlock codes through VZW's global services. When there, I plan on getting a local Vodafone SIM. My question: What do I need to do to the phone settings to ensure that calls, texts, and data access work without a hitch? The reason I ask is because I've seen other posts about several problems in getting data access to work and different steps needing to be taken to remedy the situation (regular SIM vs microSim, data roaming checked vs unchecked, etc), whereas others seem to have everything working from the get-go. Subsequently, I'm just looking for a reliable bullet list of what I need to do to be up and running. Thanks in advance!