The phones were tested on a hardware level by Cellular Insights as well as how good they performed in real-world LTE tests, which were conducted in the USA and Canada in the first week of September 24, 2018.
This is a stark contrast to previous iPhone XS investigations which have largely suggested that the battery claims don't actually materialize in the real world. The reason is simple as the same channel is used by Verizon, AT&T, T-Mobile. In the second round of the speed test, the iPhone XS Max took 43 seconds, while the Galaxy Note 9 fared better at 35 seconds as it managed to keep nearly all the apps in its memory. The iPhone X was also used as a reference, and the tests indicate that Apple's next-generation iPhones are superior than the last-generation models as far as cellular connectivity is concerned.
The iPhone XS Max comes closest to its Android rivals at signal levels below -120 dBm, when there is between zero and one bar of reception. The CMWFlexx can simulate pretty much any signal condition you can think of, including arcane band combinations, signal handoffs, and even 5G.
Coming back to comparisons, Ookla found that the Galaxy Note 9 showed an average LTE download speed of 43.2Mbps, higher than the iPhone XS's 38.9Mbps in the United States. Ookla collected the speed comparison data during the week of September 24. This in turn would allegedly help Apple reduce its reliance on Qualcomm for devices like the iPhone. The creators really took the time to develop software and improve the quality of the shot. We were unable to find any issues in the hardware that would explain negative experiences, but we also don't want to deny the experiences a few people are having.