Hi I am trying to understand where the fundamental difference between the Electron 3G (EU) and Electron 3G (US). I know they operate on different frequencies but I am wondering what about the electron dictates this i.e. is it the antenna, sim card or part of the IC on the electron? I have a low production wearable application in which it would be helpful to have one electron switch between global wireless networks either automatically or with minor adjustments for example swapping sim cards of antennas.
Thanks,
-Sam