I just have a straight talk unlimited phone plan and can just use my phone as a hotspot with no extra charge. It’s great. Obviously no substitute for real internet but it’s good enough to watch YouTube or Netflix in reasonable quality if you’re some place without WiFi and just looking to pass the time.
The first 10 GB are at a higher speed, but after that it still works with no fees but it’s a little slower but I’ve never even noticed when I’ve gone over do it must still be good enough to do simple things like that.