https://www.theverge.com/2018/6/7/17438632/sprint-15-dollar-unlimited-plan-deal-announced

Just as the Department of Justice begins examining whether the proposed merger between T-Mobile and Sprint would raise wireless prices for US consumers, Sprint is announcing a limited-time unlimited data plan for $15 per month. If you can put up with 480p video when using cellular data and don’t mind being slowed down during times of network congestion, $15 is pretty cheap. Sprint’s regular unlimited data plan is $60 per month.

This promotional plan includes unlimited talk, text, and data. It does not include any hotspot functionality whatsoever. It launches tomorrow, June 8th, so if you’ve got specific questions around what else might be included (international data, etc.), they might have to wait until the full details are out. The other big asterisk is that this special offer requires porting a number from another carrier. You can’t just start a new line of service. So you’re not exactly making a small commitment by going in on this.