Level 1

18 points

Wifi „no internet connection“ issues (iOS16)

Ever since upgrading to iOS16 my two phones have serious Wifi issues. It connects to my home Wifi but the connection is sluggish and unstable and the connection receives the label „no internet connection“. I have multiple other devices including two iPads, an iPhone on iOS15, a MacBook, all of which have no issues at all. This issue has also been reported last year after iOS15 rollout here. The issue does not occur on both phones simultaneously and pretty much at random. It first appeared on my older iPhone 12 and after receiving my iPhone 14 Pro Max, which has been setup using an iCloud Backup from the 12, the problem appeared there as well immediately.

Apple Support hasn‘t been much help yet. Reset network settings, delete all VPNs, restart router, set proxy to automatic, etc… all didn‘t help. This issue is also a pain to communicate. One Apple Support guy declared the problem solved as I could load a website (yay!). So my hope is someone from the community has silently found a solution for this.

Posted on Sep 19, 2022 10:39 PM

Top-ranking reply

cshaze

Level 1

8 points

Posted on Jan 14, 2023 7:22 PM

I noticed this issue started recently myself. Resolution to these types of issues can be unique to your environment so please continue reading with that understanding.

It appears that the issue may stem from DNS resolution.

To quickly test this set your DNS to manual using the following DNS servers or similar (see image below).

8.8.4.4

8.8.8.8

These are Google's public DNS servers and safe to use. Your router by default will likely use your ISP's DNS servers which is generally fine but in this case we should rule them out. When you do this, if you see a DNS server with an address of something like 192.168.1.1, remove it (note after the third dot you may have a different number, for most installs it will look similar though). This is the default that is allocated from your router. If you leave this local address as your first DNS server address, you won't get a good test. In fact things could stay much the same so this step is important.

If this manual DNS change works you should consider changing your router's DNS settings to either the servers you used in the test or Cloudflare's or something.

You can test for a fast DNS server here > https://www.dnsperf.com/

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Similar questions

97 replies

Dec 18, 2022 8:15 AM in response to Ken_iphone12pro

Glad you solved it. However, TotalAV is a totally useless app that just consumes energy and slows down the phone, but does nothing useful on an iPhone.

pausnit

Level 1

9 points

Dec 18, 2022 8:46 AM in response to Lawrence Finch

I have no vpn. This is unsolved.

Ooftah

Level 1

8 points

Dec 27, 2022 4:52 PM in response to Theodorant

Having the same issue. No resolution, any suggestions (apart from what is listed in this thread?)

Dec 27, 2022 5:15 PM in response to Ooftah

Ooftah wrote:

Having the same issue. No resolution, any suggestions (apart from what is listed in this thread?)

Have you deleted any VPN app and profile?

Theodorant Author

Level 1

18 points

Sep 24, 2022 12:34 AM in response to Theodorant

With the router company and the ISP, we were able to gain insights. Using a VPN, the problem does not seem to occur, which is why the router company argued the ISP may have an issue with their DNS service. The ISP, however, didn‘t find any signs of trouble in their systems. Nonetheless, both argued for a router factory reset. After router factory reset the problem does indeed not occur anymore. Now I‘m trying with the router company to isolate the problem by readjusting the router settings one by one until the problem reoccurs. It has to be noted, that no one dares yet to accept the error on their side, so it is still unclear whether it is router, ISP or iOS16. I‘ll provide updates.

@jason: If you can organise access to a VPN service I recommend testing that for once. You mentioned you tried router reset: to factory settings or a later OS version? Is your router rather new?

Sep 29, 2022 7:09 PM in response to Lawrence Finch

Hi Lawrence,

Other devices are iPhone XR running iOS 15 and 2 Windows laptop. All the devices including effected one are well within Wi-Fi router range as it is in home.

I have faced this issue, when I haven't left the Wi-Fi device range as the router and I were in the same room and then suddenly the internet goes down.

Dogcow-Moof

Level 8

36,821 points

Sep 29, 2022 9:24 PM in response to starlord9708

Again, the "Internet went down" part of this sounds suspiciously like the failure of a DHCP renewal.

What is the router? Does it have security features of any kind?

I ask as some routers will explicitly refuse to pass traffic for devices it didn't assign an IP address to, so even though your device may have retained its 192.168.x.x address, something failed in the renewal process and the router won't pass traffic for it any more.

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Wifi „no internet connection“ issues (iOS16)