iPhone 8 on iOS11 keeps disconnecting from wifi

Same here...the Senior Advisor said the same here in Sweden.

After some testing, I've figured out that the issue with dropping Wi-Fi is only happening with the 5 GHz band.

I'm running an ASUS RT-AC3200 router that offers three bands; two with 5 GHz and one with 2.4 GHz. If I switch to 2.4 GHz, the connection is stable. Note that the bandwidth should be set on 20/40 Hz as well.

Is it the same for you guys? Please do a test.

Despite this, this is a clear issue with the iPhone X. I have two iPad Pro's, one iPhone 7 Plus and all has stable connection on the same network of the 5 GHz, only iPhone X. My wife has complained as she is running a iPhone 8, but there I've not done any tests.

Very interesting! I just had the ATT reps take a look at my home network and they told me that they were recommending that their clients establish a 5 GHz channel and switch our iPhone 8s over to that network. I’m going to give it a try and see if we have any luck with that channel. Of note, the tech also mentioned that they were getting a lot of calls about compatibility issues with the 8 and X phones and home networks. He wasn’t at all surprised by our complaint and seemed to know exactly what he needed to do. More to follow.

I spent 45 minutes chatting with Apple Support about this issue. I just got the 8 Plus on Monday the 27th and it started doing it right away (shutting off wi-fi on its own). Since going through these same steps with Apple Support yesterday, it hasn’t happened again (knock on wood).

I went to Marriott Hotel and they have a decent Router I tested the same range to try to Micmic the similar scenarios of my Range at my residence ! There were no issues in the hotel ! So I guess to all those who are having issues it is most probably your Router and the iPhone 8/X having the latest Wi-Fi Harware which tries to Pull a lot of Bandwidth when downloading and your router not being able to meet the demands; so the router will cut-off the Signal !

I am not certain that what I have stated is the actual reason but if so I would like to know ! And if anyone can suggest a good in-expensive Router !

This is the Temporary Fix for now !

Settings-> General -> Next to your connected WiFi there is an “ i “ -> Tap on that -> You may get 2 options-> Auto-Login and Auto-Join

Disable Auto-Login !

Now your WiFi Should Stay in Sleep mode when locked and immediately Wake when notifications come or explicitly waking !

I am in talks with Apple Support Team about the issue will update you’ll !

Add me to the list with the Wi-Fi dropping out.

The suggestions from turning off auto-log-in and Wi-Fi location services have not worked so for. Neither has resetting and restoring as not worked either.

I had a similar issue. When I setup my new iPhone, other devices in my home received a message asking if they wanted to allow my new phone to access the WiFi network. They selected allow and I was automatically on the WiFi network. But after locking my phone and unlocking a few secons later it would not automatically connect to the network. I went into WiFi settings and selected forget WiFi network. All that I had already connected to. I had two in my home. Then I let it search for available networks. Selected the network and manually typed in the ssid(password). No problems since

This issue drove me nuts today - my iPhone X would connect to wifi at my sister's house for about 10secs and then continuously connect / disconnect for a second or so each.

I tried all the suggestions in this forum and other places, but nothing helped.

So I thought that this may be related to an ill attempt of going into power saving mode or something like that. I connected the phone to a charger, and sure enough the phone no longer exhibits this faulty behavior. Even more, now that it charged to 59% it holds the connection! Could this be related to some of this new iPhone throttling "feature" due to a low performing battery? Just know that I was nowhere close to low power mode, I had at least 35% of battery when I plugged it in.

Any thoughts on this one?

This may be off the topic and I'll get back to tearing my hair out in a second, but I thought your response was a nice touch, rarely seen with the anonymity of internet communication, and the polar opposite of the usual "ha ha stupid newbie" tone on many forums. Good on you 🙂

So I have been having this problem, and found a solution that worked. I tried several different things on various threads. Only thing worked though. In WiFi, click the small i next to the network you. Auto-join was switched off. Toggle it to on. Done.

I don't know if it defaulted to off with an iOS upgrade, but this solved the entire problem for me. Hope it does for you.

Hello all.

For me this problem was specific to wifi calling not staying connected to wifi networks. If you having wifi calling issues this might help... I think we all that have had and are having this problem are pretty frustrated and want to blame apple. But based on my googling I have a feeling this isn't iPhone related per se. Hard to individually diagnosis everyone's situation here but I tried every suggestion in this thread which worked only randomly if at all... And then temporarily.

The permanent fix FOR ME was actually held with my router. No reason to go Into great detail because if this is your problem, the Google will help you finish the fix specific to your setup... But here is what I had to do.

Disclaimer: this works perfectly for me on ATT iOS devices. Not sure if the ports are the same for Verizon, sprint and T-Mobile... But I suspect they are.

1. On the router You need to setup specific DHCP IP reservations for each ios device you want wifi calling on. Restart each ios device (or toggle wifi off for 10-15 seconds) after you save changes.

2. On the router You need to setup port forwarding to each device UDP 4500 and UDP 500. Increment it by 1 for each device.

Completed setup will look like this:

iPhone 1:

DHCP IP reservations "192.168.1.11"

Port forwarding: UDP 4500, UDP 500.

iPhone 2:

DHCP IP reservations "192.168.1.12"

Port forwarding: UDP 4501, UDP 501.

iPhone 3:

DHCP IP reservations "192.168.1.13"

Port forwarding: UDP 4502, UDP 502.

Etc.

Apparently this is still a work around because most of this should just work on residential wifi networks however that is specific to whatever you use for your local wifi networks. Additionally for anyone that has never setup a DHCP IP reservations, your local IP will vary by default but you can setup to whatever you prefer, personally I'm not familiar with every router but if you are not comfortable doing this on your own, just google "configuring DHCP IP reservations for XXXXXXXX". (XXXXXXXX being your style router of course.)

Hope this helps some of you. If your phones wifi calling already works... Then that's the way it's supposed to be and I wouldn't make any changes haha.

Edit: this post assumes your iPhone is powered on, connected to wifi, and already has wifi calling turned on.

I got the iphone 8 plus about three weeks ago and since the day I got it I noticed it would constantly disconnect from wi-fi as soon as I locked my phone. After spending 3 hours on the phone with an apple rep. Who had me reset my phone, my router, and connect to itunes for software I still had the same problem. Today while trying to connect to wi-fi I accidentally clicked the i on the right side and realized there’s an auto join button which was off. I clicked it on and my problem was fixed!!! I have not disconnected from wi-fi. I even left my house and it joined automatically when I got back.

I'm having a similar issue. Ever since I updated to the recent iOS, my iPhone 6 is having connection problems. The only place I can get internet on my phone is right next to the router. When I walk into my room, less than 15 feet away, the wifi automatically disconnects. I know its my phone and not my internet because my family's phones (all iPhones) and laptops (MacBook Pro and Air) aren't having this problem. Anyone have a solution?

What is fixed? Your phone no longer disconnects from WiFi when locked?

When I go the "i" option next to the WiFi name, I only have the "Automatic access" option.
Where is the "Auto join" option?

My phone keeps disconnecting from WiFi when locked, it's so annoying.

Woo Hoo!!

I finally was able to resolve this issue.

I communicated with Apple support, they have collected the diagnostics data from my iPhone, but they couldnt figure the issue.

they asked me to head to apple genius bar, they couldnt figure the issue.

The decision was to replace my iphone!!

After replacing the iPhone I noticed to have the same issue!!

****!!

have looked into many articles over the net, tried all posted resolutions, nothing did work!!

Until I started playing in the settings and tried different method from my head, I finally was able to find a resolution!

SIMPLY, GO TO THE NETWORK SETTINGS CLICK/TAP/TOUCH ON THE CONNECTED NETWORK

TURN OFF => AUTO-LOGIN

Hope that will work for you!!