iPhone 4S (and iPhone 4) Speed Test: AT&T vs. Verizon

What happens when you take the same phone (almost) on 3 different carriers and have a speed test party? Nothing special, but it does make for a good conversation.

Tonight, I have some screenshots created by a friend of mine. He took the AT&T iPhone 4S, the Sprint iPhone 4S and the Verizon iPhone 4 and ran some quick speed tests. These tests are just that, tests, and should only be taken at face value. This is a very non-scientific method.

Peter lives in the suburbs of Detroit. According to Verizon’s coverage maps, they have 3G blanketing the entire Detroit area. Sprint’s maps and AT&T’s maps show pretty much solid 3G or better coverage as well. Sprint had 5 bars, AT&T a full 4 bars and Verizon with 3 bars when the tests were run. Only the AT&T phone was below 50% battery life during the tests.

My friend wrote:

I was quite astonished by the results of our Speedtest.net test on these phones, all running iOS 5.0.1.


A while back Josh and Xavier did a few speed tests comparing the same iPhone on different carriers at the same location. The results heavily favored AT&T.

Check their tests out:

Earlier tonight with the Samsung Galaxy S II Skyrocket, in a non-LTE market, I got a speed test of 4733kpbs down and 1040kbps up. With my iPhone 4, I can’t get over 3kbps in the same location. Weird how it all works out.

Let’s see some of your Speedtest.net screenshots with different phones and OSes.

Source: ComputerNinja.com (Peter Filias)

Disclaimer: These are not my tests. They were performed by an old friend who ran a competing Dell Axim website back in the day.