Ever since I got my Iphone X my LTE has been very slow. In the exact same locations with my previous Iphone 6s I never experienced these problems. In trying to trouble shoot this I have ran multiple speed test from speedtest.net. Every single time my download speed is always north of 30 MBPS but the highest my upload speed has ever been is 1.2 MBPS. When doing the same tests on my old Iphone 6s I would get similar download speeds with upload speeds consistently being above 15 MBPS. There is another Iphone X on my plan that has the exact same issues. The owner of that phone travels all over the state and has the problem no matter what location they are in. Any ideas what the issue could be