Am in the US. Android phone. Bought us boosters, got SMS and calls to work but can't get data to work. For that, I changed network provider in setting manually and then restarted the phone. Tried AT&T and T mobile. Data still not working. Also, my network icon top right showing full bar with R over it, not sure if that's roaming or restricted? Do I need to activate data roaming? Help would be great. Thanks Koodo!