I currently have an iPhone 5. I am outside of the USA for school and have a local simcard. Would I be able to replace my current verizon simcard with the local sim and use it while I am outside of the country? I would still plan on switching back to my old sim when traveling back to the USA. From my understanding the iphone5 is already unlocked. Just want to make sure I can do this without compromising any features on my iPhone