MetroPCS does not only work with Hotspot devices but also Cellphones. The cellphones range from flagship and midrange devices. There are two simple ways to enroll. The first one is that you have can visit their stores or even a T-Mobile store since Metro is an affiliate. Secondly, you can visit their official website and fill out a form after which you will submit it.
After a few days, you will be prompted to receive a sim card or to purchase a smartphone. Remember, Metro is not under the Government Lifeline program. Due to this, you are not eligible to get a free smartphone or any free services. If you are below the government Poverty level, then the best option is to go for the SafeLink wireless which provides free talk, text, and data.