iOS 14 and Wifi

If you have tried everything, what do you want us to tell you?

FWIW: My iPhone 7, iPhone XR, iPhone 8 Plus and iPhone XS running iOS 14 have no issue.

Maybe reboot your Wi-Fi router, check for firmware update?

Also no issue connecting to 2.4 GHz as well as 5 GHz Wi-Fi.

I have an iphone x with ios 14.0.1 running, after updating my iphone from ios 13 to ios 14 and also 14.0.1. I have noticed that i have wifi issues. So i investigated my fortigate wifi envirement with other devices. For example my macbook, but also my windows laptop. These machines work perfecr with the same wifi network.

so what i did, i made 2 new extra wifi SSID 1 for only 2,4ghz and the other for 5ghz. When i connect with my iphone to the 5ghz network, i have continius wifi problems. But when i connect to the 2,4ghz network, this work fine. I did the same test with the iphone X from my wife, and exactly the same issue i have experienced with her iphone. I also did the default things what i found on the internet to reset iphone and some sepcific settings etc.. nothing helps. So there is for sure an issue with this ios and 5ghz wifi. I hope apple comes with an update with an fix.

Model: iPhone XS Max

Issues since 14.1, currently 14.2:

cellular data: not at all or very slow upload speeds (less than 1 mbs), not at all or sometime good/very download speeds (0 or 250 mbs).

calls without wifi calling toggle active can get disconnected during the call or the other person cannot hear me while I can hear that person very well.

Carrier signal is at max level (4 bars) and there are no apparent issues with wifi or bluetooth.

I did everything! Literally checked every possible root cause:

Potential cause 1, the carrier:

- tried physical sims/ e-sims

- same sims in samsung worked like a charm

- different carriers for each sim

- called all of them, no reported outages on their side

- problem still there

Potential root cause 2, the phone:

- Spent more than 5 hours with apple support on the line while we went through all the steps (up to complete restore) and sent the full 30 mins diagnostics

- conclusion: no hardware / software problem

- recommendation: go to an authorized apple service provider

- did that, but they also didn’t find the problem (unofficial/ personal note from them: ios-related)

- installed the 14.3 beta 1 and 2, same problem

Since not everyone with XS Max is having this issue, I would assume it was something I did that may have caused this; there are two things I have in mind: 1. iPhone had ios 14 beta installed on it since it went public around June. 2. Always had a mdm profile installed for running work-related apps (and yes, of course I removed it when doing the tests).

I really believe this to be an iOS related issue and I hope the engineering team is on top of it.