After some thought I have recently switched to Project Fi network. Project Fi is a wireless service from Google. Project Fi automatically connects you to the best available signal, whether that's Wi-Fi or one of our three 4G LTE partner networks. It uses T-mobile, US Cellular & Sprint network. It's obviously a technology demonstrator. Getting CDMA & GSM work together is awesome! The best thing I liked about Project Fi is that I get credited for the data I don’t use. Unlike AT&T where the date gets rolled over. With Project Fi I only pay for the data that I use. This is important for someone like me, I use data rarely and I want data available on demand. With my previous AT&T plan I purchased a 100 MB plan for 5$, I used 100 MB of it during travel. However, the rest expired after a month. This is one of the primary reasons for shifting to Project Fi. My previous AT&T plan costed me 27$ inclusive of taxes (unlimited text and talk plan). My new Project Fi pl...