Hi all Thinking of upgrading to the 10.5 iPad Pro, 256GB with LTE. Currently have a 128gb wifi model, and i absolutely love it. Getting an LTE version will be the major upgrade. However, i have a few questions... The apple sim sounds wonderful. Ala-cart LTE plans? Ability to switch between carriers? International use? Sounds awesome. But I read that some of them lock you down. I have ATT as my iPhone carrier. It would be nice to tie it in with my monthly phone bill and data allotment. BUT - once you choose att, does it become locked? I am not about that life! Also, I travel a few weeks a year internationally and there is spotty/no wifi often to the places I go. A major reason I am thinking of getting LTE iPad is the ability to switch into an international plan when abroad. Whats the situation there? If I choose ATT, will I be able to switch into international services without the crazy ATT international roaming surcharge? Thanks for the advice.