Here are some sources for anybody who doesn't want to believe this happened:
https://arstechnica.com/tech-policy/2018/08/verizon-throttle... https://www.cnet.com/tech/mobile/verizon-throttled-californi... https://www.cbsnews.com/pittsburgh/news/verizon-throttle-fir... https://www.snopes.com/fact-check/verizon-firefighter-data-s... https://finance.yahoo.com/news/verizon-explains-why-throttle...