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Old 12-31-2010, 05:05 AM   #1 (permalink)
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Default UMA stopped working on my 8320

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The UMA on my Curve 8320 stopped working about a week ago.
It gives me the error code W004.
ISP error. DNS server cannot be reached.

But this doesn't make any sense to me, since I can use web services just fine; I can recieve email and from the phone, I can ping
psgw.t-mobilesgws.com. (My carrier is T-mobile.)

I ran a packet sniffer on the network. And when the blackberry connects it does the following:

1. Attach to Wi-Fi network
2. DHCP request.
3. DNS request for psgw.t-mobilesgws.com
4. DNS request for rcp3.us.blackberry.com
5. https connection to rcp3.us.blackberry.com
6. DNS request for psgw.t-mobile.com
7. More chatter with rcp3.us.blackberry.com

After that it will send periodic DNS queries for psqw.t-mobilesgws.com but it never seems to attempt any sort of connection to psgw.t-mobilesgws.com. I know the phone is getting a good IP address since like said before I can ping the address. It would seem that there is something the phone is not liking about the IP addresses it's getting back. (It's getting back about 11 IP addresses).

I've tried everything I can think of. I rebooted my router. I've pulled the battery from my phone. I've removed and reinserted my SIM card. I've tried different routers.

I did a chat with T-mobile's tech support. They did a "network switch" and when that didn't work had me call RIM. (What part of "my phone doesn't work" don't you understand). I called RIM via Skype. I got a recording that asked me for a credit card.

By the way. I'm deployed in Iraq. I have no cell coverage (without activating international roaming). And I have limited access to other phones. This phone has been my primary means of communicating back home for 3 months now. It has worked pretty much flawlessly up until this point.

Thanks for any help you can give me.
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Old 12-31-2010, 07:01 AM   #2 (permalink)
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Default Re: UMA stopped working on my 8320

Uhm the same thing happened with my bold 9780's uma. But the weird thing is, t-mobile solved it for me. They told me my phone was attempting to connect to the wrong phone tower, so they reconnected it to the proper, and closer phone tower.
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Old 12-31-2010, 07:12 AM   #3 (permalink)
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Default Re: UMA stopped working on my 8320

Quote:
Originally Posted by Harrison Leggio View Post
Uhm the same thing happened with my bold 9780's uma. But the weird thing is, t-mobile solved it for me. They told me my phone was attempting to connect to the wrong phone tower, so they reconnected it to the proper, and closer phone tower.
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I'm pretty sure that you just made this entire post up from your imagination.
It's complete nonsense. Do you even know what UMA is? It has nothing to do with "phone towers".
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Old 12-31-2010, 08:27 AM   #4 (permalink)
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Default Re: UMA stopped working on my 8320

Wow.
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Old 01-01-2011, 04:13 PM   #5 (permalink)
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Default Re: UMA stopped working on my 8320

I fixed it.

It turns out it was a DNS issue all along, although I don't know how as I was able to ping psgw.t-mobilesgws.com from the phone and do manual DNS lookups from the phone.

I did a DNS lookup for psgw.t-mobilesgws.com on my laptop and got the following warning before the IP addresses:
Truncated, retrying in TCP mode.
So I'm guessing the the blackberry will only use UDP (the default) for DNS queries?

So I took one of the IP's (208.54.3.1) and typed it into my router so that it would respond to DNS queries with that IP address and not do a DNS query of its own. But why wouldn't the router return "looked up" IP's via UDP? Or why would the blackberry reject such IP's?

Anyway I reconnected my blackberry and it worked flawlessly.

I even called my wife to tell her I had it working.
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