also I'd like to add one more thing, carries like sprint and tmobile who offer unlimited data and actively advertise it by all possible means, are simply attracting as many new customers as they can possibly get along with those who are switching just out of principle. but as soon as they'll start seeing excessive data usage they will discontinue their unlimited plans and switch to tiered. ATT and Verizon are the biggest carriers in United States and yet they discontinued unlimited plan while smaller companies still offer it its a no brainer to understand where its all heading to. lol