Most cost effective source for data while traveling? I have an iPhone 5 that is on a AT&T shared family plan – being on the shared plan makes my cell phone usage very cheap- only $25 a month. I would like to be able to use data occasionally to get work done on my laptop while traveling, but our shared AT&T plan keeps running out of data. What's the most cost effective source for data that I could tether to my laptop? The AT&T LTE network has good coverage for where I travel frequently (between Utah and Idaho).