ios 11 slow wifi speeds

Try connecting to WiFi on the 5 GHz band instead of 2.4 GHz if your router has the option. This worked for me.

I had this same problem since I upgraded to iOS 11 on my iPhone 6S Plus. I tried everything suggested except for a full restore.

I was connected to my router via the 2.4 GHz band when having the problem. I would get >50 Mbps on my Macbook but <1 Mbps on my iPhone when running a speed test.

I instead connected my iPhone to my router's 5 GHz band and have consistently been getting >50 Mbps on my iPhone now and have had no problem with WiFi on iOS 11 since switching bands.

I hope this helps all of you.

An update after some digging, my issue seems to be related to my specific router and the iPhone 6S, by some reason they don’t get along when the router is setup for “beamforming”, if this is shut of I get full speed!

Problem Solved!!! Read on! I had to restore to factory settings and start as new(don’t use backup). I had to set up my phone as new meaning download everything and re-enter passwords but my ookla speed test shows I’m back up to 109mbps again!

I have iPhone 6s

So I was messing around with router settings as I’m having the same issue as you guys.

My router was set to sync 5 ghz wireless to 2.4 ghz. I turned this option off within router settings so it wasn’t syncing. I then renamed the 5 ghz connection SSID by adding text _5ghz.

This then allowed Wi-Fi within the iPhone app to see the 5ghz network and I joined the “new” 5ghz network I had created.

It’s been about 6 hours since I did this and it seems to have worked.

I have found two fixes for the slow WiFi issue of iOS 11:

1: switch to a 5Ghz WiFi network instead of 2.4Ghz

2: if you don’t have a 5Ghz option, then turn Bluetooth off.

Both of these put my 6s’ WiFi download speed back to where it should be. The speed was cut in half by iOS 11 and it took me days to figure out the root cause and to identify these two fixes.

Hopefully Apple will fix this issue soon. Good luck.

I may have inadvertently found a fix for the slow WiFi speeds.

I reset all settings on my 7 Plus again. As I was entering my settings, I disabled “WiFi Assist”. I then swiped up for the control panel and disabled/enabled “Cellular Data”. After that, both our phones are getting consistent WiFi speeds like our iPads.

This has been several hours now and still working fine. Maybe something folks here can try?

Maybe this issue has to do with a “Cellular Data” and WiFi conflict in the software?

Fingers crossed. If it reverts back, I’ll update the thread.

I tired that with no luck

BUT wiping my phone and restoring it from backup DID solve my WiFi slow problem in mail. Let’s see if it stays that way

I just updated my wife’s iPad Air and now it’s laggy only on mail also. I might wipe that also.

Something is not installing correctly

Chaz,

I tried something different in my router and so far, it’s appears to have solved my issues. *fingers crossed*

I was reading the Spectrum/Time Warner forums and came across post about disconnects and inconsistent Internet connection with Apple devices. Someone recommended setting the router‘s starting address at 192.168.1.100, instead of default of 192.168.1.1. The poster mentioned some Apple devices had trouble recognizing single digit ending router addresses of .2 through .9. I did that and then I set my devices on DHCP reservation starting 192.168.1.99 and below.

No issues since then. Speed seems good and haven’t had the issue where it appears connected, but it’s not. Only been a couple of days, but promising. Not sure if this something you can try, but thought I would share.

Hoping it sticks, but who knows.

I was experiencing this with new iPhone 8 plus iOS 11.0.3.

This morning I disabled WMM on my router and since then all my ping tests are fine.

This fixed my issue. For instructions on how to disable google disabling WMM on your router model, might help you too

So it seems that iOS is having some major issues when it comes to Firewalls / Proxies (just personal opinion) - What I've noticed now is that our iOS devices are much happier on a more "open" network within our internal LAN here at home. I'm going to build a separate wireless LAN for them versus utilizing my existing LAN for my other devices. From what I can tell, they run much faster so long as FW's aren't running on the given access point you are utilizing for said iOS devices. (Not cool and much more prevalent in iOS11, it seems. Hoping iOS11.3 somehow addresses this.)

Here's some wishful thinking on iOS11.3 if you're curious: http://www.redmondpie.com/ios-11.3-beta-1-download-expected-release-date-feature s-more/

With that said, here's my plan for now:

Incoming WAN connection to Gateway (FW Enabled)

LAN1 with my normal security/stand-alone FW also enabled (WiFi/Ethernet Capable) - Devices outside of iOS Devices

LAN2 (WiFi 2.4Ghz / 5Ghz) - Only for iOS Devices (FW disabled on local AP but will still utilize FW at Gateway)

DNS / IP's / Routing obviously at your own desire...

Good luck everyone,

Devin

I was having the same issue over this last week, tried many solutions as possible.

My conclusion is that it is something related to 5G connection at 80/MHz.

I set up my router to do the transmission of 5G at 20/40MHz and now my IPhone 6 WiFi is working normally again !

Not sure if this has been mentioned already but turning off WiFi networking within privacy settings, system services seems to have helped.

Hi,

After lots of testing I think i found something!!!

None of the things mentioned so far changed the slow speeds for me, however i remembered the areial issues with the iphone 4 etc

So do the test yourself with speed test! holding your phone then in a case or hold by the charge cable and repeat see what speeds you get.

Mine was while holding 0.9Mbps

Not holding the device holding the charge cable 22Mbps

???

Tony

iphone 6

11.2 beta 3

Hello!

I’ ve had this issue since a while back, almost no speed on my 5GHz Wi-Fi at home, but full speed on 2.4 GHz. Today I noticed my iPhone had changed name to “IPhone” rather than what it use to be called (Henriks iPhone), when I changed back to my normal name on the device I now get full speed on my 5G Wi-Fi again! Maybe a upgrade a few weeks back accidentally changed the name on my iPhone, but still it is strange that it affects Wi-Fi speed...

Hi Everyone,

Just wanted to post another update. I found out that my Google Chromecast was causing havoc with my WiFi as well. Might want to read into these issues as well: http://bgr.com/2018/01/15/google-chromecast-home-wifi-problems-router-crashing/