Exactly. I've checked a few of the phones that won't route and they have
a valid IP address, they have a valid gateway value, but no DNS.
The problem I am dealing with is a couple hundred employees who have
come to expect free high-speed WIFI at work for their cell phones and
tablets (personal stuff, not work related.) And I'm astounded at how
rapidly people change phones!!! I looked at one guy's Android phone a
couple weeks ago, and yesterday he shows up with an iPhone. A girl I
helped connect her Android last Friday sent me an email today "warning"
me that she is getting a new iPhone by the end of the week and she's
heard that people are having trouble getting WIFI on their iPhones.
What I've done on the Androids is remove the WIFI connection from the
previous connection (the WAP hasn't changed, but I did change the
password at the beginning of January) and then reconnect. So far I've
only had one Android that didn't work on.
There's a similar 'fix' touted for the iPhone when you google the
problem, but so far it hasn't worked once on nearly a dozen phones.
The problem is almost identical each time (the wording changes depending
on whether it's Android, iPhone, and what flavor of Android.)
It prompts for password, accepts password, indicates it is getting
connection details (IP, etc.) and then it finally finishes without
further indication there's a problem. But when you try to access the
Internet, it routes through the phones data connection (LTE4 or 3 or
whatever their carrier provides) and not WIFI.
I've looked at the DHCP server and it shows the devices by MAC address,
with a valid associated IP and lease. Everything on the DHCP servers
looks right.
I'm going to replace the routers and try having the router assign the
DHCP values and see how that flies. Nothing else is working.
Thanks!
Mike
Ted Roche wrote:
Yikes. That sounds like a "fun" problem. Sorry, bro.
You say it seems to be a DNS problem. Why do you think that?
There are info screens on iPhones and Androids that will show you IP
address & DNS settings, though they are often difficult to find. My
Android will happily set DNS1 & 2 to 8.8.8.8 and 8.8.4.4 if you don't
specify. Do you block devices that want to use their own DNS settings?
On Tue, Feb 9, 2016 at 4:21 PM, Mike Copeland <[email protected]> wrote:
Anyone else having problems with WIFI WAPs starting to refuse connections to
iPhones?
I manage several building networks that have WAP devices, and I've started
getting complaints in the last couple of months about "my cellphone won't
connect." It seems that the connection happens, but the data won't route.
From what I can tell it's a DNS issue. (The WAP is on an isolated network
with a DHCP server that provides an IP, gateway, and DNS settings when
connected.)
I've Googled this and read for hours, and I have found some "fixs" that
didn't work when tried. Mostly it's iPhone 6's but a couple of Android
phones, too. No idea what flavor of Android.
It is happening with both Cisco WAPs (Aironets) and Netgear. And once a
device connects, it's happy happy to come and go, reconnecting as needed.
Any WIFI gurus in the crowd?
Thanks!
Mike Copeland
[excessive quoting removed by server]
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