From July 15 at T-Mobile, get 10GB of 4G LTE data for each line when you sign up for two to four lines on their Simple Choice plan. Plus, each line comes with unlimited talk and text in more than 120 countries. These plans start at $100/month for two lines. That beats Verizon's plan of 10GB of data shared among four lines for $140 per month. Deal ends September 7.
Of note, you can also get 20GB of data for an additional $10/month per line. Also, Simple Choice plan users can receive unlimited calling from the U.S. to Mexico and Canada for free. (Existing T-Mobile customers can upgrade their plans or add a $10 feature to include Mexico and Canada.)