Ultra Mobile SIM card works
Ultra Mobile SIM card works well in big city but no connection most of the time while travel in Amtrak train from Nebraska to Chicago.
You need to enter US zip code to activate the card, this zip code determine the phone number (if u requested new number) and expiry date/time, wasted 1 day of expiration date due wrong timezone selected.
Customer service is great except shop opening hours is a bit early, they closed at 3pm.