iPhone XS Max Wifi Problem

I had the same problem and a hard reset of my iPhone XS MAX fixed the problem and I can connect again to my 5GHz wifi network. You’ll have to push the volume up button quick then the volume down button quick and then keep pushing the sleep/wake-button until you see the apple logo when your device restarts.

Update. I think what I'm seeing is definitely a software problem. I was performing a data download intensive operation on my Xs Max and noticed it proceeding slower than normal. speediest.net showed that my download speed dropped from 285 Mbps to 175 Mbps down with an equivalent percentage drop in upload. At the same time speeds remained normal on my Mac and iPad.

I then reset network settings, logged into my wifi and speed was immediately returned to normal.

I do notice a small (6 dB: -30 vs -36) difference in WiFi signal strength between my 12.9 iPad Pro 2nd Gen and my Xs. In addition to being higher the signal on the iPad is far more consistent than on the Xs. I measured using the app NetSignal.

Been having the same issue, just deleted the network from my phone and added it back in and it went to 5ghz. iPhone X’s att. Can’t wait for an update!

Go to setting

Click WiFi

Click your connection

Go to DNS

Click manual

Delete everything

Add

8.8.8.8

And 8.8.4.4

I have same issues on new XS, BUT NOTICED SOME THINGS!

It's fast if you turn off wifi and turn it back on, BUT, after a few minutes of using the phone, browsing slows down. It's only quick and a reboot or turning off wifi then turning it back on, BUT again, after a few min it slows down. ?

The best way to see this is to go to facebook and load someones photos and click on them and go back and click others, it starts to load slow. Same with instagram on your main screen when scrolling - when you see videos posted, they are at a blurrier resolution. BUT as soon as you turn wifi off and use your networking they are much clearer, and facebook photos, etc, load faster on the network with wifi off!!! I have an iphone 6s that I was doing this side by side with my XS and the XS slows down when on wifi after being connected for a few min.

NOW, when you do a speed test, it's still showing great DL speeds on wifi, BUT NOT when browsing after a few min after being connected... It's like a througput issue or something.

You might want to consider updating your router's firmware. Not sure if it will help, but can't hurt to have the latest.

same issue - continually dropping wifi. using as a hotspot and the tethered device continues to lose connection as well. seems like a clear wi-fi antenna issue. I opened a ticket with apple, they are very aware, I went through the process of collecting log data while the issue happened and supplying that information/log to the engineers. They are very aware of the issue which is why they are collecting manual logs and trying to determine if it's a software or hardware issue. I'm afraid its a hardware issue...here's hoping apple figures it out/updates whatever it takes and makes it right for everyone

I have the Max and Google WiFi.

my wifi speed stays at 380 Mbps.

I restored from backup.

Usual troubleshooting last step is to reload iOS and set up as a new device.

Same problem. Forgetting and re-logging onto my Velop system fixed it for me.

I have an Eero router and have tried enabling a " beta" mode they have to force the phone to use the 5ghz instead of first going to the 2.4. I tried reset network settings on the phone and doing a complete factory reset and setting everything up from scratch. Nothing seems to help. I wish apple would acknowledge this and at least say " a fix is coming" . I didn't spend $1500 to have slower wifi !!!!

having also wifi problems since swapping my iphone 7 / 7+ to a XS and XS Max.

Wifi is slower than on my old iphones 7 AND the signal is weaker.

It's happening on both phones, the XS and XS Max so it's certainly a bug.

Apparently last night my Xs Max lost connection to my WiFi, which never happened with my X. My phone used a ton of cellular data when this happened and I’ve almost used up my allotted data of 22 GB before AT&T slows down my speeds. There has to be a bug in the iOS with these new phones. I hope Apple fixes this issue with iOS 12.1. I’ve also noticed problems connecting to my HomeKit devices. My wife and daughter have older iPhones and they have no problems staying connected to my WiFi.

My XS Max drops the 5GHx wifi connection about once every week or so and it connects to 2.4 GHz because I have the same password for both bands. I had an Iphone 7 plus for more than 2 years and it never lost it's 5 GHz wifi connection, in the same location as I have my XS max and with the same router. I just did a Network Reset to see if it will fix the problem. I not, Apple needs to fix this annoying issue

Wifi and cell signal strength is not good on the Xs Xs Max and Xr. This is a known issue to Apple and so far nothing done. My 5c actually got better reception and stronger signal strength when measured from the exact same location. Also the more you are located in a fringe area the worse it is..... This makes me sick after wasting this much money

I wasn’t experiencing this issue until I updated to iOS 12.0.1. Now when connected to any WiFi network my Xs max is next to useless.