For the last 3 days I have been having extremely slow 4g speeds. Getting around 500kb on speed tests and pages time out most of the time. The 4g icon never goes away and I have good signal strength. Previously I would get around 8-12Mb during the day and around 20 Mb late at night. I called support and we did all of the standard troubleshooting and they wanted to replace my phone, however I have recreated this issue on 3 other thunderbolts from my office. The two representative I spoke with said that there are no issues reported.
My phone is only about a week old and I have not modded it in any way.
Veganshoegazer, I agree those are very slow speeds you are picking up. Are you still having this issue? If multiple users are having an issue in the same area, I would recommend contacting technical support to submit a trouble ticket for the area so our network team can further investigate.