Slow speeds are no fun at all!! The thing with data speeds is that they can vary depending on your location as well as your signal strength. Did you happen to notice how many bars of signal your phone showed that you had when you were doing the testing? Also, did your phone show that you had a 3G, 4G, or LTE symbol next to the signal bars? Lastly, have you had a chance to test the speeds in another location separate from where you ran the first set of tests?