Who I have the same questioned this topic

At the end of April, my plan was switched from a limited data plan to an unlimited plan. About a weeks in, suddenly my LTE speeds plummeted and my reception grew spotty as well and they have been consistently terrible ever since (despite having actual line of sight on the nearest tower). I have yet to even come close to the throttle point (22gb) because I can barely use my phone to do much of anything online anymore, which is problematic because it is my main source of internet access. To complicate things further, the issue is not only affecting me. I share the plan with my father, mother, and sister. My mother has noticed it happen to her too, but my father is unaffected. Despite the same network and same plan, when I ran a speed test right next to my father this morning, barely a foot apart, he ran 4gb down and 2gb up, while I was running 0.8 down and 1 up. I've yet to ask my sister about it, but she'll be visiting soon so we'll see. Videos barely load, webpages even crawl, and some of the apps I use suddenly can barely function.