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Galaxy S9 Smokes iPhone X on 4G Speed Tests

Based on our benchmark showdown, the A11 Bionic chip in the iPhone X outmuscles the Snapdragon 845 processor in the Galaxy S9 when it comes to sheer horsepower, but there’s a speed test that’s arguably the most important where Samsung’s flagship is way ahead of Apple’s.

Credit: Tom's Guide

(Image credit: Tom's Guide)

That would be 4G LTE performance, which determines everything from how fast web pages and apps download to how quickly you can share photos and videos.

Galaxy S9 vs iPhone X: 4G LTE Performance Compared

Galaxy S9+ (T-Mobile)
iPhone X (T-Mobile)
Average Download Speed71.6 Mbps
48.8 Mbps
Average Upload Speed10.1 Mbps
7.7 Mbps
Video Download Time18.8 seconds
35.9 seconds
Photo Upload Time20.7 seconds
44.4 seconds

The Galaxy S9 is equipped with a Qualcomm X20 Category 18 downlink LTE modem that supports peak download speeds of up to 1.2 Gbps. The iPhone X we tested, which has a Qualcomm X16 modem, is a Category 16 downlink modem that supports up to 1 Gbps speeds.

For our testing, we used a T-Mobile SIM card and tested in the same location in New Jersey. We used the app to gauge throughput, which measures both download and upload rates.

The Galaxy S9+ averaged a very impressive 71.6 megabits per second over 5 runs, compared to 48.8 Mbps for the iPhone X. That’s a difference of 46 percent.

The upload speed delta between the two phones was not as dramatic. The Galaxy S9+ averaged 10.1 Mbps, versus 7.7 Mbps for the iPhone X.

For a real-world test, I downloaded the same The Hobbit: An Unexpected Journey movie trailer from Google Drive on both phone. The Galaxy S9+ took 18.8 seconds and the iPhone X 35.9 seconds.

Lastly, I uploaded three photos totaling 8.1 MB to Dropbox from both the Samsung and Apple phones. The Galaxy S9+ took 20.7 seconds, while the iPhone X took twice as long at 44.4 seconds.

Overall, the Galaxy S9+ is a 4G speed demon, so be sure to keep its faster LTE in mind before you decide between it and the iPhone X.

Credit: Tom's Guide