Ultra Mobile hopes to expand its business by offering its products in over 6000 7-eleven stores as reported by phonenews.com. The company is focusing on providing service in areas with large immigrant populations, which is in line with the MVNOs focus on international calling plans. Starting at $19 every plan offered by Ultra Mobile includes unlimited international texting and calling to a minimum of 10 countries depending on which plan you are on. This T-Mobile MVNO also offers international calling credits to other countries that are not on its list for unlimited calling. Plans are priced very competitively, so give them a look over if you are interested in T-Mobile service with unlimited international calling, texting and a fair amount of data for under $30.