Mobile network does not connect to internet. Antenna Broken?

Hello, my s8 was randomly overheating the past few months. Charging port broke/ would not charge and smell burnt if attempted. Fast forward a few months, I have been using wireless charging, and now the internet no longer works when I am using data (no wifi). Wifi works when connected, but even if I have plenty of service, all data using apps say to check connection/ won't connect. I have reset network settings multiple times, with no luck. I am thinking it is an internal issue that has come about regarding the antenna.. perhaps due to the overheating that happens from time to time. Advice is much appreciated. Thank you!