Re: AT&T 3G Works WTF -_-
 

huh what do u mean? u think im not using a att sim card do i really need to make a a video to prove it -_-?

Re: AT&T 3G Works WTF -_-
 

if i had a t mobile sim why would it show AT&T 3G -_-

Re: AT&T 3G Works WTF -_-
 

It is not possible that he is locking to LTE. N900 is not LTE capable. That is a fact. The radios are not made for that. Also, it cannot lock to the AT&T 3G network. It is not something about sw, it is about hw. Now, AT&T got some space in the 700 MHz spectrum back in 2008. This is most likely the freq they will use for their LTE deployment. (http://www.att.com/gen/press-room?pi...rticleid=25428). I would say that you are using the app to change the operator name. Btw, the operator name changes if you travel outside the US. The only way in which this would not change here in the US is by an agreement with T-Mobile which I seriously doubt. In that way, the T-Mobile network would detect an IMSI that belongs to an AT&T SIM and then send back the AT&T operator name. This does not sound logical but I have not tested this myself. One question, why the map that you are using to prove your speed shows that you connected to some server near Kansas if you say you are in Reno? Did I miss something?

@depu. 4G is a broad term. It can refer to more than one technology. LTE and Wi-Max are two examples of 4G technologies.

Re: AT&T 3G Works WTF -_-
 

i could not find out how to use the mouse to select an area closer to me

Re: AT&T 3G Works WTF -_-
 

well im lost it will connect downtown but not at my house maybe i was roaming on t mobile? who knows -_- but i ran a speedtest and it showed att so i dont get it lol whatever i give up im just letting people know what happend not trying to get attn or anything like that

Re: AT&T 3G Works WTF -_-
 

i live up in cali and make it into town only once a week or so.

i was smack dab in the middle of downtown when i couldnt get 2g to work (harrahs)

Re: AT&T 3G Works WTF -_-
 

heres a question for ya:

yesterday when i was in reno manually searching for networks is it possible my eyes tricked me and it really listed 2G at&t/3G at&t instead of 2G twice? of course theres no 3g so maybe my brain just didnt look close enough? i did think it was odd that it saw two 2g networks. i dismissed it as an artifact of fMMS

i'll check it out next time im in town. wish i saw this thread a few days ago, wifey and i were both in town with our n900s on sunday

Re: AT&T 3G Works WTF -_-
 

can anyone else do a manual search and see AT&T 3G pop up?

Re: AT&T 3G Works WTF -_-
 

fwiw, i just looked. i do in fact have two listings for 2G. not in reno right now, about 50 miles away

Re: AT&T 3G Works WTF -_-
 

There is a possible explanation for this. The OP may have been roaming on T-Mobile, without knowing.

Back in the day, VoiceStream (now acquired by T-Mobile) and Cingular shared GSM infrastructure. However once Cingular bought AT&T Wireless Services ("AT&T Blue"), they had to sell the rights to that network to VoiceStream for antitrust reasons, and instead adopted the old ATTWS network. As we know, Cingular is now (yet again) AT&T.

Long sordid history, but the end result is that with an AT&T SIM (and especially on Nokia phones), the T-Mobile network (MNC 310-260) shows up as "AT&T" (just like AT&T's own MNC 310-410).

Re: AT&T 3G Works WTF -_-
 

I see two possible options why this could very well be true.

1. AT&T *is* upgrading towers to support T-MO phones so they can make the big bucks off T-MO for data roaming at 3G.

OR

2. He was logged onto AT&T, but it was actually roaming and connected to a T-MO tower in the area, thusly getting 3G.

Just a thought.

Re: AT&T 3G Works WTF -_-
 

It's not a function of the network, it's a function of the SIM. It uses the same mechanism that causes network selection to be restricted when using a carrier's phone.

It does so happen that on current at&t SIMs that they only override networks in MCC 310, although several years back that wasn't the case, and no matter where in the world you went your phone would display "Cingular," and any time you scanned for networks they would all be named "Cingular."

I haven't investigated whether it's possible to disable that functionality on the N900.

Re: AT&T 3G Works WTF -_-
 

Of course it would have an at&t IP address. When roaming, your packets still transit your home network's GGSN. You're essentially tunneled back to your home network for data purposes.

The phone reading "AT&T" has nothing to do with T-Mobile. at&t's SIM forces the phone to say that no matter what network it's on. (As long as the mobile remains in the US, anyway)

Re: AT&T 3G Works WTF -_-
 

Sorry i just dont get your meaning here in the first para. I was matching the 3G shown as network on the picture with the AT&T shown as the ISP. Tunneling is out of the question, you cant tunnel faster than your current network speeds. So *if* he is on ATT network, he should either not be shown 3G or by should be showing TMobile as the ISP.

Also if i remember right on network roaming, it will also show the name of the network which you are currently on, even if it is not your home network.
I was down at virginia around the new year and at some places it showed me ATT while i was using my Tmobile phone.

Re: AT&T 3G Works WTF -_-
 

Anyone who does this (using an at&t SIM) will only be determining whether T-Mobile has 3G at their location.

This is what I get in my area that has T-Mobile 3G. Since at&t doesn't allow in-market roaming here, I get "Access Denied" if I try to connect to it.

http://media.share.ovi.com/m1/s/1671...1c39654cfd.jpg

Re: AT&T 3G Works WTF -_-
 

Yep. I know, Wi max really is not an option i consider for 4G on the n900 though :).

And if ATT is running LTE on 700 band, then this should not be possible.

About the Kansas thing, i wouldnt think much of it, i live on the east coast and it shows the same for me. But come to think of it, i am on the Tmobile network not ATT like sheon, odd that we have the same end point for 3G.

Re: AT&T 3G Works WTF -_-
 

T-Mobile doesn't program their SIMs to lie to you about the network you are using.

And yes, when you roam on at&t, you are using T-Mobile's Internet service. at&t (or other roaming carrier) only provides a backhaul from your present location back to your home carrier's network.

GPRS requests first go to the SGSN of the carrier you are connected to. Your phone then starts up a PDP context through the SGSN to a GGSN, which is identified by the access point. (epc.t-mobile.com, whatever) All your data traffic goes to the GGSN back on your home network. From then on, it's no different from you being on your home network.

As a T-Mobile user, if you found yourself roaming on at&t with an N900, you'd obviously only get EDGE speed, because that's all the network supports. Conversely, if an at&t user roamed on T-Mobile 3G, they would very possibly see 3G speeds, because at&t's GGSN is certainly capable of sustaining 3G transfer rates, given that they have a 3G network. As long as the interconnection between T-Mobile and at&t has the capacity available to sustain a high speed transfer, you'll get the faster speed.

Re: AT&T 3G Works WTF -_-
 

Ye, this makes sense. So basically it seems that he is doing a domestic roaming on the tmobile network while using an ATT sim.

So in a way it is possible to enjoy 3G on ATT network :)
Just have an ATT SIM and be in a place which has no ATT coverage and has Tmobile 3G coverage. Of course roaming charges and penalties apply.

Re: AT&T 3G Works WTF -_-
 

I wanna roam off Tmo then too! =(

Re: AT&T 3G Works WTF -_-
 

I wish I could also, but I have yet to encounter any T-Mo 3G I can roam on, and I was in several cities lit with T-Mo 3G last month. :(

There was one place I didn't try it, as I wasn't aware T-Mo had 3G there. When I'm back in Alabama next month, I'll definitely be checking it out. (There's a half-decent chance roaming is allowed there, as at&t's network isn't very good in SE Alabama, thanks to a severe lack of spectrum)

Re: AT&T 3G Works WTF -_-
 

I would think much of my traffic going halfway accross the country for its gateway or worse yet, a proxy...especially when dealing with traffic that is sensitive to delay (VoIP, streaming video).

For T-Mo, it seems like the Internet2 APN routes "some peoples'" traffic thru the midwest, where the epc APN has it routing closer to the user's actual location (at least per speedtest.net).

Re: AT&T 3G Works WTF -_-
 

I meant w.r.t him noting the OP's proxy is from Kansas even though he is in Reno.

I too have the internet2 APN on my n900, will checkout what epc gives me.

Edit: Looks it it brings the proxy closer to me, but no impact on ping latency as such 200ms or up/download speeds.

Re: AT&T 3G Works? (Domestic roaming on T-Mobile 3G)
 

went to reno today, only trying near 395. after about a dozen tries i actually got an at&t 3G connection to show up, but when i selected it i got a 'no access' message. fwiw i was at the light on mill st near 395 in front of b of a. by the time i tried to connect, we were moving northbound on 395, who knows if i could have connected had i stayed in place

Re: AT&T 3G Works? (Domestic roaming on T-Mobile 3G)
 

I really doubt it. I can pull up "2G AT&T" (works) and "3G AT&T" everytime I scan for service. The "3G AT&T" always says "No access." I don't even think it is trying, actually. If I have the phone near speakers, the "2G AT&T" makes connection noise, but "3G AT&T" is dead silent. I'm fairly sure my old 3G phone made noise next to speakers, but someone correct me if I'm wrong.

Re: AT&T 3G Works WTF -_-
 

Fair enough, but it is not recommended to run VoIP on circuits with latency over 150ms as QoS issues arise.

Re: AT&T 3G Works? (Domestic roaming on T-Mobile 3G)
 

Though it's certainly not like the 850/1900 international N95 fun we all had.

-Edit, Hlorri signed up and posted. Thanks

Re: AT&T 3G Works? (Domestic roaming on T-Mobile 3G)
 

ok this is whats going on, the n900 picks up tmobiles 3g, you can use up to 25mb's of their 3g before at&t gets mad and sends you a emil and text haha.. and thats per bill cycle.. now i did my research and at&t can not charge you due to the roaming agreement. they just prefer you not use it cause that means they have to pay out of pocket.. the only end result is that they cancel your account or line free of charge (no deactivation fee).

Re: AT&T 3G Works? (Domestic roaming on T-Mobile 3G)
 

I just checked, and I have T-mobile 3G coverage in my area (100% positive). How come I can see "3G AT&T" but it will not connect to it? Additionally, I see nothing about T-mobile 3G. I'd love to use the 25MB / mo, no problem as I am almost always using WiFi. I just don't like missing calls when my n900 is connected via EDGE and calls cannot get through! Is there anything I can do to get the n900 to "roam" on the T-mobile 3G network?

Re: AT&T 3G Works? (Domestic roaming on T-Mobile 3G)
 

Mmmm the data should suspend and let the call through. Does it happen all the time? I'm on at&t with Edge and I've never experienced this..

Re: AT&T 3G Works? (Domestic roaming on T-Mobile 3G)
 

Up until you just asked, I have never directly tested it. I always based it on receiving text messages where the sender said "I just tried to call you..." and I noticed my phone was syncing my large email accounts.

So to reach a more definitive conclusion, I ran speakeasy.net's speed test and tried calling my own phone while it ran. Five (5) times I was connected to voicemail after just 1 ring. Once the test was completely done, my 6th call got through and the phone rang.

I would say it is consistent, reproducible, and it only happens when a data connection is open for a lengthy (5+ sec) amount of time (not just when the "Data Connection" icon is visible). I think it is based on actual data flow, not just an established connection.

I also tested a SSH session. It could be interrupted, but only if I was just setting at the command prompt. Having a program with consistent terminal data flow, i.e. "top", would block calls from getting through.

Re: AT&T 3G Works? (Domestic roaming on T-Mobile 3G)
 

dang. I had an N80, european one.

every time I walked into a local Indian Casino here in California, (black oak casino) it would say 3G. it's just some kind of F-up in the network / frequencies they use.

Re: Need 3G connection from AT&T
 

okay either i am crazy or my phone is i recently oc to 205/805 and when drivimg today i found iwas connected to 3g wtf

but it was on my attmms configure vs regular att one am i going craxy or was i roamin? i was in elk grove how the hell can i be roaming?

Re: Need 3G connection from AT&T
 

Can you post the cell tower APN when you obtain 3G connection. ?

That should solve the mystery :) IMHO

Re: Need 3G connection from AT&T
 

ccording to whois ip is att is my phone playing ticks with me? wtf

Re: Need 3G connection from AT&T
 

this is tripping me out at hospital now ttyl guys this happen to me once before for like a 30 sec span in stockton but this time i was lock on good till i went into a elavator

Re: Need 3G connection from AT&T
 

it looks like i was data roaming so what is the difference with regular 3g which gives us 2g-2.5g and then cingular wireless dataroaming gives us 3g-3.5g so does that mean cingulta roaming is on other band freq other then regular att 850

Re: Need 3G connection from AT&T
 

Yes, because it means that you were using T-Mobile's cell tower and T-Mobile uses different 3G frequencies.

Re: Need 3G connection from AT&T
 

yep, this has been posted before. Rarely an AT&T user will roam on TMo and get 3g, and then post here that AT&T works w/3g speed on the n900. It doesn't.

Re: AT&T 3G Works? (Domestic roaming on T-Mobile 3G)
 

Seven posts concerning domestic roaming on T-Mobile's 3G network have been merged into this thread.

Re: AT&T 3G Works? (Domestic roaming on T-Mobile 3G)
 

how is it even possible to roam in area that att covers? and wouldnt the ip show up as tmo instead of att? the ip belongs to cingular which is also att. i could be totally wrong but if iwas roaming on tmo tower shoulldnt it show tmo ip instead of att?