I conduct an independent speed test every week or two of Verizon's supposed 4G data from home. Download results are about 5% of the proper speed, 18 times slower than advertised. By definition, 4G should be 12 Mbs says Wikipedia https://en.wikipedia.org/wiki/4G?wprov=sfla1. See attached speed test taken from my home where Verizon download speed was 0.11 Mbs with only 30% stability.
Zero upload speed with zero stability means no internet surfing because my keystrokes never get sent out. Massive ping delays literally off the scale at 999 milliseconds also cause website crashes. Compare the fast test of 20.64 MBS download with the slow 0.94 MBS download right after it. Those were taken 2 miles apart and 5 minutes or so apart, all else exactly the same. On the Interstate freeway where you can't use the phone, the network works fine (20.64 MBS), but downtown their network is worthless (0.94 MBS, the fastest in a long time from home, but WAY under 4G), but they refuse to even troubleshoot it for the past year. My phone itself has been tested by multiple Verizon experts in several of their stores and unanimously they said there is nothing wrong with my phone. All speed tests are conducted at my home located on a major thoroughfare 2 blocks from the heart of down town. I just gave up on a chat with their customer service lasting nearly 2 hours yet featuring only 4 texts from them in that time, asking for information they have repeatedly been given.
A second 2 hours goes by with no response from Verizon, and I give up. Horrible customer service. One evening I had a file to download which should have taken 1 minute. Six network failures in a row, and 4 hours later, the download is a total failure. In 4 hours Verizon has not even answered their own chat help line. The next day I use McDonalds WiFi and download that file in 45 seconds. I have filed multiple complaints with the Better Business Bureau against Verizon. Verizon doesn't care one bit.