iPhone XS 29% Faster 4G LTE Over Previous iPhone X

With the release of the iPhone XS and iPhone XS Max last month came a new Gigabit modem and antenna design that is capable of delivering significantly faster download and upload speed to your iPhone. Putting the new iPhone right inline with the latest Android hardware networking wise. After a few weeks of gathering results using the SpeedSmart Speed Test App we now have a good idea of how the new iPhone performs in the real world across all 4 carriers in the US. Thanks to 4×4 MIMO and some other additions we are seeing double digit percent increase for everyone living in a location with towers capable of taking advantage of the new hardware vs. older modem iPhone.

Nationwide as you can see from the chart above all 4 major networks in the US are seeing significant gains in average speed. We expect this to only get better in the coming months as the network for all 4 carriers is continued to be upgraded across the country. Right now on average using the iPhone XS users are seeing 29.48% faster download speeds when averaged across all networks.

Targeted Cities

Looking at specific cities across the US the difference is even greater. We have created charts for 3 major locations with more to follow at a later date. Charts for Miami, FL, San Francisco, CA and New York City are below. Looking at these 3 locations the gains in performance across all networks is significant and each operator should be very happy. TMobile users in Miami, FL are seeing speed of almost 80 Mbps or almost double what users are getting on a iPhone X during the same time period. In New York City Verizon users are seeing a 33% increase in download speed on average and in San Francisco many AT&T users are seeing an almost 50% increase in download speed.

iPhone XS Speedtest - MiamiiPhone XS Speedtest - NYCiPhone XS Speedtest - SFO

We fully expect this trend to continue and only get better overtime and in more locations across the county. We will do an update post in a few weeks with more cities.

Get SpeedSmart Speed Test for device on the App Store or Google Play. 

iPhone X Qualcomm vs Intel Modem

iPhone X Which Modem is Faster?

Ever since the iPhone 7 was launched over a year ago I often get asked “Which iPhone is faster, the one with the Intel modem or Qualcomm modem?”

With the launch of the iPhone 8 I was asked this question again and then many more times with the release of the iPhone X a little over 1 week ago. I decided to look into it and find out. With 10 days of speed test taken on the iPhone X I gathered the info needed. Tho an admittedly small number of speed tests have been taken with the iPhone X compared to other iPhone models, this due mostly to limited supply of iPhone X devices. Purely in terms of Download & Upload speed I think I can answer the question.

All data used was from speed tests taken only with the SpeedSmart iOS app on iPhone X devices, with LTE connections in the US between November 3rd and November 12th.


Below is the raw numbers from the chart above with each networks average ping added.

Qualcomm Modem (Network, Download Mbps, Upload Mbps, Ping ms)

  • AT&T — 27.46 Mbps — 9.32 Mbps — 38.50 ms
  • T-Mobile — 26.54 Mbps — 8.01 Mbps — 50.05 ms
  • Sprint — 20.28 Mbps — 4.06 Mbps — 57.76 ms
  • Verizon — 35.18 Mbps — 11.01 Mbps — 53.66 ms

Intel Modem (Network, Download Mbps, Upload Mbps, Ping ms)

  • AT&T — 30.13 Mbps — 9.64 Mbps — 41.84 ms
  • T-Mobile — 33.34 Mbps — 11.73 Mbps — 54.23 ms

So which one is faster?

When it comes to just speed, neither. Neither modem is really faster than the other in the iPhone X and that’s a good thing. While the Qualcomm modem iPhone X on Verizon has the highest avg. Download speed of all 4 networks, the Intel modem T-Mobile iPhone X is not far behind and has a higher avg. Upload speed. Getting an average across both device modems and excluding Sprint because of its slower the network the difference is rather minimal 31.73 Mbps Intel and 29.72 Mbps Qualcomm

The more interesting point is that the Intel modem iPhone X for both AT&T and T-Mobile performs significantly better. Granted there is a 5:1 test gap between the Intel and Qualcomm iPhone X but a greater than 10% performance gap between for AT&T and 15% for T-Mobile.

We can say that when it comes to just purely speed that there is no reason if your on AT&T or T-Mobile to try to get a Qualcomm modem iPhone X. If anything the Intel modem version might be better for both those networks.

We are going to revisit this in a couple months and see if these numbers change or the trend stays the same as we get more speed tests using both iPhone X models.

iPhone X is here

SpeedSmart for iOS has been updated. You can download it for your iPhone or iPad here. This major release, version 7.5 brings many updates and changes chief of which is iOS 11 and iPhone X support. This new version of SpeedSmart has had quite a lot of work done to better fit with iOS 11 and take advantage of the beautiful new display on the iPhone X. As well some other changes have been made with some new features.


In addition to iPhone X support the biggest change is our new unified result details view. This gives you a detailed overview of a selected result. There is much more information here than every before. You get complete result information with a location map, download & upload charts, connection grade and comparing stats. We have also added the ability for you to add a short note to each result that you can reference later.

Our new Network & Stats overview gives you a much more clear look at your iPhone or iPad current connection, how it has been performing overtime and how it compares with your ISP. There are also now quick actions to clearing or exporting your history.

What’s new?

  • iOS 11 & iPhone X support
  • Bug fixes and general performance improvements
  • New result details view with charts, grades and more
  • New stats view with improved connection info
  • Ability to add notes to individual results
  • A new iOS 11 look for many some other areas

What’s Coming?

Lot’s more. We have many new big features planed for 2018 that will make there way into SpeedSmart for iOS, Android and the Web. We are also always open to suggestions so please contact us if you have any.

Get SpeedSmart on the App Store.

Stay Tuned!