wifi issues with Iphone 11 Pro Max

I found that my Norton’s VPN was disrupting my WiFi access into my iPhone 11 Max Pro. So I completely disabled it on my phone and that was three weeks ago and haven’t had issue since.

i turned off wifi assist and restart my device. working fine now

Hey guys!!

i was also facing the same prb for a while now but now I think somehow I found the reason for this!

try turning off your Bluetooth and den reset ur network settings, after phone gets rebooted start connecting ur WiFi again and hope u get the speed u need.

Hope this work for u guys too

so far it seems more reliable when I added 8.8.8.8 to DNS servers by clicking the i next to Wi Fi and selecting Configure DNS

This fixed it! I had Nortons VPN set up on my phone and when i deleted it everything fine! Thank you for the advice!

I'm well aware of how DNS works. However when I changed this it improved. Although it seems just changing it was enough , not necessarily what I changed it to as I changed it back to what DHCP provides then it kept working. Keep in mind the issue we are talking about is internet speed while on Wi-Fi, not necessarily Wi-Fi speed. DNS resolution performance can impact internet browsing speed. So just the act of changing it appeared to fix something. No other device I have has any Wi-Fi problems only the 11 Max Pro, it's the worst wifi I've ever had on any device in my life. I will try later to see if I can capture packet traces from a router to capture more detail what is going on when it breaks.

I got temporary relief by “forget this network”ing from settings > WiFi > (individual settings for each network accessed by touching the small blue “i” icon next to each network, forget and then rejoin, it helped my cause for a little while anyway, probably enough time to sync and back up or do any last ditch maintenance requiring internet. Best of luck y’all.

I had issues on 5ghz, turned off Auto channel on the router and tried each available manually. Found out conflicts with DFS channels. On the “less congested DFS” channel my Pro Max performed much worse than IPhone X. Changing channel it now performs slightly better. Wifi throughout on the X Taos out at 600mbs, the Pro gets to 700mbs. iMac 1300mbs

It took an email to Tim Cook to get the San Jose wifi specialists on the case. They ran diagnostics, bought my router, ran numerous tests. Even might have a swat team come to the house to diagnose. Since it doesn’t happen on any other Apple device in the home.....all roads lead to a bad iPhone 11 Pro. max. Now they are sending me a new phone

for exchange that should arrive next week. So I will post when I receive it whether it solved the issue. But seems like the solution here.

I had the same issue until my phone started overheating in addition to the WiFi issues. I called Apple and sent in my phone for repair. The internal damage was so bad they had to give me a replacement phone with a new serial number. No problems since..

Had same problems. I deleted all of the VPN software I had on the phone and cleared up the problem.

Turn off the VPN that’s how I fixed mine

i actually did 3 types of reset to see if it made a difference, making sure that i would carry on to the next method only confirming that that method didn't work...

i did reset all settings , reset all network settings and restore factory settings...

i can connect to 5ghz network now but signal strength it pretty poor, but after upgrading my iphone x to the latest ios 13.2 i noticed that this problem also is having issues the same signal strength as my phone 11 pro max... i have given up and just use my carriers network lol

I know its a headache. Try clicking on your wifi connection on your iPhone and then click 'Renew Lease'. I did this last night and so far it seems to be working better, however I haven't thoroughly monitored it to verify it fixed the problem. My guess is that it probably won't but anything is a worth a try right now.

I am having a similar issue with my iPhone 11 Pro Max. I noticed yesterday that the issue does seem related to the 5Ghz range vs the 2.4 Ghz range. Since my router has three transceivers built into it, I was able to test with the SAME router just using 2.4 Ghz vs 5 Ghz. I noticed that when trying to use 5 Ghz, the maximum speed that I was getting was less then what one would expect from 802.11b (yes, it was less then 11 Mbps and sometime lower then 1 Mbps). As soon as I would switch to the 2.4 Ghz band, the connection improved to the max that 2.4 Ghz would support (around 54 Mbps). This was consistent and did not change no matter what I tried. I even did the reset of all network settings on the device. This is a pretty serious bug in the hardware / software for the iPhone 11 Pro Max.

On a hunch, I started to look for apps that might be in the way here. I do have the AT&T Mobile Security app, and it does monitor Wi-Fi networks. I am going to try turning off the app and see if I get a different result tonight.

I have no VPN apps or settings on this device at this time.

My next step will be to go to Apple and see what they can tell me.