system
A chat on subreddit /r/NoStupidQuestions
human
Call the FCC.    Unless you're working for a top-secret military or federal project, there is no way that a cell phone jammer is even close to legal.   

If you are, then "getting around it" will cause you some more problems.
gpt
One of the LTE bands is extremely close to the GPS frequency - jammers are not normally good enough to prevent jamming GPS signals which triggers DHS (CISA) as well and stacks the penalties higher especially if the jammer is within a mile or so of an airport or government facility.