Slow WiFi speed with iPhone Xs Max

My 2018 iPhone Xs Max 256 is getting much slower internet speeds when connected to my Home wifi. I use Spectrum Internet and normal wifi speeds in excess of 100 Mbps on all of my mobile devices (iPhone X 256, iPad Pro 10.5) and 2018 Mac Book Pro. They all get about 110 Mbps, but the iPhone Xs Max is only getting about 55 Mbps or slower, sometimes as low as 7 Mbps.

I use the app called Speedtest by ookla. All tests are done sequentially at same time of the day, in the same room, about 10 feet away from the wifi router.

There's definitely an issue with the iPhone Xs Max. I notice the problem when I read the LA Times e-edition every morning. I've been reading the e-edition daily for over a year. The pages would load instantly as I swiped right-to-left when I used the iPhone X. Now, with the iPhone Xs Max, when I swipe to open the next page, I have to wait for the page to load and be in focus. It's frustrating! Has anyone else noticed a slower speed? Is there a fix? Has a case been opened on this issue?

iPhone Xs Max, iOS 12

Posted on Sep 27, 2018 7:08 PM

Top-ranking reply

Gary Shockley Author

Level 1

16 points

Posted on Sep 28, 2018 11:22 AM

I figured out the cause for slower speeds. I have a dual band router (2.4GHz and 5GHz). The 5GHz band is faster but has a shorter range. The iPhone was using the 2.4GHz band while the iPad and MBPro were using the 5GHz band. When I changed the iPhone Xs Max WiFi connection to the 5GHz band the Speedtest resulted in 117 Mbps. I'm happy now. The WiFi may automatically switch back and forth between 2.4GHz and 5GHz bands. If I want to read the e-edition of LA Times or do any internet-related activity, I will make sure the iPhone is connected to the 5GHz band for fastest speed (as long as I'm not too far from the WiFi router. The 5GHz band is strong in most areas of my home.

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19 replies

Feb 19, 2019 7:12 AM in response to fessor105

I also get over 600 Mbps downloads in San Clemente, CA with an Iphone Max 256. You guys just need to setup a good router properly and use a fast ISP.

Jan 14, 2019 8:22 PM in response to Gary Shockley

I purchased the XS MAX and it pretty much won’t connect to my phone service provider (Sprint) almost all the time and if and when it does there is just one bar - never had that problem with the 6+ that I had for over 3 years. I had waited to get the XS Max in the hope that these type of issues would have been escalated and resolved by Apple but sadly I was disappointed with this issue. Is it that the Intel chip instead of the Qcom chip is the issue? If so, shouldn’t Apple replace these devices if and when they have settled with Qcom? We the purchasers weren’t aware of switch to Intel chip due to the dispute and ended up being shafted silently!

stotan7

Level 1

4 points

Oct 3, 2018 8:26 AM in response to Gary Shockley

I am have a similar issue. I am running a nighthawk router that consistently got over 100Mbs on both 2.4 and 5Ghz. Since going to IOS 12 the 2.4 drops to 7Mbs and below. Also, when I try to switch to the 5Ghz it either doesn't see it, or has a very difficult time connecting (i.e. says wrong password (it's not), or can't find it). As a note, my two bands have different SSID's. I have gone through multiple rounds of resetting modem and router.

I love my XS Max so I really hope apple gets this fixed ASAP

ccongg

Level 1

4 points

Dec 10, 2018 1:50 PM in response to Gary Shockley

I just got my new iPhone XS Max yesterday and I'm already feeling like it was a mistake. I had the iPhone 6s+ prior and the phone itself was excellent. With my new phone i experience slow speed & wifi/data connection. Important emails, texts etc. are not coming through and its very annoying. Is there a way to fix this? iPhone 6s+ never had this issue.

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Slow WiFi speed with iPhone Xs Max