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Cingular's new GSM network upgrade....

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May 5, 2004 2:42:58 AM

Archived from groups: alt.cellular.cingular (More info?)

I'm a Cingular customer in the San Francisco bay area. Where Cingular
has recently changed over their GSM network from 1900Mhz to a mixture
of 850Mhz and 1900Mhz. Cingular no longer supports my Ericsson T28
World phone as it is 1900Mhz and 900Mhz only. I bought my phone from
Cingular less than 2 years ago for $200. When I called Cingular
support to complain about the issue they flatly denied that they have
changed anything on their GSM network and told me that it is a problem
with my phone. I explained my phone works fine when I travel outside
of the Cingular's bay area network. They still insisted my phone was
broken and told me to buy a new one. Nothing I said could get them to
admit that they had changed their Network, even when I told them that
the Cingular store had informed me of the Network change they still
denied it. I also asked for a list of phones that Cingular supports
and they said they did not have that information.
I checked their web site and they no longer sell World phones, they
only sell GSM phones that use 850Mhz and 1900Mhz.
Can someone can point me to some Solid information I can use to get
them to admit that they no longer support my phone.
I'm really amazed that Cingular think it is ok to lie about this!
Has anyone else had a similar experience? I have a spare phone that I
use, but it is as heavy as a brick and I am sick of it.
Daniel.
Anonymous
May 5, 2004 10:31:28 AM

Archived from groups: alt.cellular.cingular (More info?)

I think you're mistaken.
I'm in SF Bay Area also.
I'm with Cingular and my *old* Nokia phone (at least 3 years old) works just
fine.

Boris
"Daniel" <zzfreezz2003@yahoo.com> wrote in message
news:648e9f00.0405042142.65103252@posting.google.com...
> I'm a Cingular customer in the San Francisco bay area. Where Cingular
> has recently changed over their GSM network from 1900Mhz to a mixture
> of 850Mhz and 1900Mhz. Cingular no longer supports my Ericsson T28
> World phone as it is 1900Mhz and 900Mhz only. I bought my phone from
> Cingular less than 2 years ago for $200. When I called Cingular
> support to complain about the issue they flatly denied that they have
> changed anything on their GSM network and told me that it is a problem
> with my phone. I explained my phone works fine when I travel outside
> of the Cingular's bay area network. They still insisted my phone was
> broken and told me to buy a new one. Nothing I said could get them to
> admit that they had changed their Network, even when I told them that
> the Cingular store had informed me of the Network change they still
> denied it. I also asked for a list of phones that Cingular supports
> and they said they did not have that information.
> I checked their web site and they no longer sell World phones, they
> only sell GSM phones that use 850Mhz and 1900Mhz.
> Can someone can point me to some Solid information I can use to get
> them to admit that they no longer support my phone.
> I'm really amazed that Cingular think it is ok to lie about this!
> Has anyone else had a similar experience? I have a spare phone that I
> use, but it is as heavy as a brick and I am sick of it.
> Daniel.
Anonymous
May 5, 2004 2:04:52 PM

Archived from groups: alt.cellular.cingular (More info?)

In article <4T%lc.9750$Fo4.123688@typhoon.sonic.net>,
"Boris Dynin" <spam@noplease.com> wrote:

> I think you're mistaken.
> I'm in SF Bay Area also.
> I'm with Cingular and my *old* Nokia phone (at least 3 years old) works just
> fine.

But is it a GSM phone?


>
> Boris
> "Daniel" <zzfreezz2003@yahoo.com> wrote in message
> news:648e9f00.0405042142.65103252@posting.google.com...
> > I'm a Cingular customer in the San Francisco bay area. Where Cingular
> > has recently changed over their GSM network from 1900Mhz to a mixture
> > of 850Mhz and 1900Mhz. Cingular no longer supports my Ericsson T28
> > World phone as it is 1900Mhz and 900Mhz only. I bought my phone from
> > Cingular less than 2 years ago for $200. When I called Cingular
> > support to complain about the issue they flatly denied that they have
> > changed anything on their GSM network and told me that it is a problem
> > with my phone. I explained my phone works fine when I travel outside
> > of the Cingular's bay area network. They still insisted my phone was
> > broken and told me to buy a new one. Nothing I said could get them to
> > admit that they had changed their Network, even when I told them that
> > the Cingular store had informed me of the Network change they still
> > denied it. I also asked for a list of phones that Cingular supports
> > and they said they did not have that information.
> > I checked their web site and they no longer sell World phones, they
> > only sell GSM phones that use 850Mhz and 1900Mhz.
> > Can someone can point me to some Solid information I can use to get
> > them to admit that they no longer support my phone.
> > I'm really amazed that Cingular think it is ok to lie about this!
> > Has anyone else had a similar experience? I have a spare phone that I
> > use, but it is as heavy as a brick and I am sick of it.
> > Daniel.
Related resources
May 5, 2004 2:04:53 PM

Archived from groups: alt.cellular.cingular (More info?)

On Wed, 05 May 2004 10:04:52 GMT, "Robert M." <robert156@yahoo.com>
wrote:

>> I think you're mistaken.
>> I'm in SF Bay Area also.
>> I'm with Cingular and my *old* Nokia phone (at least 3 years old) works just
>> fine.
>
>But is it a GSM phone?

Of course it's a GSM phone! cingular in California has been GSM 1900
from the outset when they bought out Pacific Bell PCS!

- - - - - - - - - - - - - - - - - - - - - - - - - -
remove NONO from .NONOcom to reply
Anonymous
May 5, 2004 3:26:09 PM

Archived from groups: alt.cellular.cingular (More info?)

zzfreezz2003@yahoo.com (Daniel) wrote in message news:<648e9f00.0405042142.65103252@posting.google.com>...
> I'm a Cingular customer in the San Francisco bay area. Where Cingular
> has recently changed over their GSM network from 1900Mhz to a mixture
> of 850Mhz and 1900Mhz. Cingular no longer supports my Ericsson T28
> World phone as it is 1900Mhz and 900Mhz only.

No.

PacBell divested all Cellular 800/850 MHz licenses it held in
California when it spun off PacTel Cellular as AirTouch in the mid
1990s. PacBell did so in order that it could bid on MTA-based 30 MHz
PCS licenses covering essentially the entire extents of California &
Nevada. SBC held no Cellular assets in California when it acquired
PacBell. And BellSouth had already divested its interest in LA
Cellular to partner AT&TWS by the time that the Cingular joint venture
was formed. Thus, Cingular controls absolutely no Cellular 800/850
MHz in California. SBC PacBell Cingular in California & Nevada has
always been and continues to be solely GSM 1900.

On the other hand, AT&TWS in California possesses primarily Cellular
800/850 MHz licenses as well as overlying PCS 1900 MHz licenses.
Previously, the Cellular spectrum was reserved exclusively for
TDMA/AMPS, but AT&TWS is now a dual-band GSM 850/1900 network. As
both AT&TWS & Cingular have recently opened all Location Areas to each
other's GSM subs, you will be able to utilize only AT&TWS GSM 1900 w/
your T28, but not the underlying GSM 850. And if the merger should be
consummated, at which point the combined Cingular-AT&TWS will have
Cellular 800/850 MHz spectrum in California, you will have to replace
your T28 if you wish to take advantage of the GSM 850 element.

Regardless, though, Cingular natively supports only GSM 1900 in
California. Nothing has changed - yet.

Andrew
--
Andrew Shepherd
cinema@ku.edu
cinema@sprintpcs.com
http://www.wirelesswavelength.com/
Anonymous
May 5, 2004 3:58:42 PM

Archived from groups: alt.cellular.cingular (More info?)

zzfreezz2003@yahoo.com (Daniel) wrote
> I'm a Cingular customer in the San Francisco bay area. Where Cingular
> has recently changed over their GSM network from 1900Mhz to a mixture
> of 850Mhz and 1900Mhz. ... When I called Cingular
> support to complain about the issue they flatly denied that they have
> changed anything on their GSM network and told me that it is a problem
> with my phone.

What exactly is your problem? Cingular in the SF area is and always
has been GSM-1900. The AT&T merger isn't final so I wouldn't expect to
hit it as a "home" network.

If you bought your phone a few years ago it's going to be out of
warranty. The phone should continue to work on Cingular's network,
even if their techs don't get trained on it (take advantage of
Internet/Usenet to find your solutions).

Cingular is trying to sell all GSM 850/1900 phones where they have
GSM, and they do sell triband and quadband phones that could work on
any GSM network globally. People with GSM1900, GSM900/1900, or
GSM900/1800/1900 phones will continue to work just fine on Cingular's
GSM1900 networks. When they're in a Cingular 850 market they'll just
roam on AT&T or T-Mobile (with the incumbent roaming charges).

A better explanation of your problem might help us solve it.

tg.
May 5, 2004 5:25:08 PM

Archived from groups: alt.cellular.cingular,alt.cellular.ericsson (More info?)

Boris,
I'm not sure you fully read my posting. The problem is with Ericsson
World phones that Cingular sold until recently. I also have an old
Nokia phone that works fine, but it is a single band phone not a world
phone.

Does anyone out there have an Ericsson world phone and have problems
with Cingular's new Network upgrade.

When I turn my phone on it comes up with Cingular on the screen and
then after a couple minutes I get a message saying "No Access". At
first this only happened on the weekends and then recently it started
to happen all the time.

Daniel.

"Boris Dynin" <spam@noplease.com> wrote in message news:<4T%lc.9750$Fo4.123688@typhoon.sonic.net>...
> I think you're mistaken.
> I'm in SF Bay Area also.
> I'm with Cingular and my *old* Nokia phone (at least 3 years old) works just
> fine.
>
> Boris
> "Daniel" <zzfreezz2003@yahoo.com> wrote in message
> news:648e9f00.0405042142.65103252@posting.google.com...
> > I'm a Cingular customer in the San Francisco bay area. Where Cingular
> > has recently changed over their GSM network from 1900Mhz to a mixture
> > of 850Mhz and 1900Mhz. Cingular no longer supports my Ericsson T28
> > World phone as it is 1900Mhz and 900Mhz only. I bought my phone from
> > Cingular less than 2 years ago for $200. When I called Cingular
> > support to complain about the issue they flatly denied that they have
> > changed anything on their GSM network and told me that it is a problem
> > with my phone. I explained my phone works fine when I travel outside
> > of the Cingular's bay area network. They still insisted my phone was
> > broken and told me to buy a new one. Nothing I said could get them to
> > admit that they had changed their Network, even when I told them that
> > the Cingular store had informed me of the Network change they still
> > denied it. I also asked for a list of phones that Cingular supports
> > and they said they did not have that information.
> > I checked their web site and they no longer sell World phones, they
> > only sell GSM phones that use 850Mhz and 1900Mhz.
> > Can someone can point me to some Solid information I can use to get
> > them to admit that they no longer support my phone.
> > I'm really amazed that Cingular think it is ok to lie about this!
> > Has anyone else had a similar experience? I have a spare phone that I
> > use, but it is as heavy as a brick and I am sick of it.
> > Daniel.
Anonymous
May 5, 2004 8:10:23 PM

Archived from groups: alt.cellular.cingular (More info?)

"Joseph" <JoeOfSeattle@yahoo.NONOcom> wrote in message
news:b0rh90p7v2898rd66ro8g4lba13cqspdjh@4ax.com...
> On Wed, 05 May 2004 10:04:52 GMT, "Robert M." <robert156@yahoo.com>
> wrote:
>
> >> I think you're mistaken.
> >> I'm in SF Bay Area also.
> >> I'm with Cingular and my *old* Nokia phone (at least 3 years old) works
just
> >> fine.
> >
> >But is it a GSM phone?
>
> Of course it's a GSM phone! cingular in California has been GSM 1900
> from the outset when they bought out Pacific Bell PCS!
Exactly! I was with Pacific Bell PCS before it became Cingular.

Boris
Anonymous
May 5, 2004 10:11:52 PM

Archived from groups: alt.cellular.cingular (More info?)

I also think you're mistaken.

Cingular may have 850MHz in many areas around the country now but your phone
should still work on the 1900MHz band. If you want the additional coverage
you need to purchase a new GSM phone.

Cingular is not obligated to give you a new phone because they added the
850MHz band.

If your contract already ended, you're eligible for an upgrade. If not,
just wait until the end of your contract, or you can purchase a phone at
retail or on e-bay.


"Daniel" <zzfreezz2003@yahoo.com> wrote in message
news:648e9f00.0405042142.65103252@posting.google.com...
> I'm a Cingular customer in the San Francisco bay area. Where Cingular
> has recently changed over their GSM network from 1900Mhz to a mixture
> of 850Mhz and 1900Mhz. Cingular no longer supports my Ericsson T28
> World phone as it is 1900Mhz and 900Mhz only. I bought my phone from
> Cingular less than 2 years ago for $200. When I called Cingular
> support to complain about the issue they flatly denied that they have
> changed anything on their GSM network and told me that it is a problem
> with my phone. I explained my phone works fine when I travel outside
> of the Cingular's bay area network. They still insisted my phone was
> broken and told me to buy a new one. Nothing I said could get them to
> admit that they had changed their Network, even when I told them that
> the Cingular store had informed me of the Network change they still
> denied it. I also asked for a list of phones that Cingular supports
> and they said they did not have that information.
> I checked their web site and they no longer sell World phones, they
> only sell GSM phones that use 850Mhz and 1900Mhz.
> Can someone can point me to some Solid information I can use to get
> them to admit that they no longer support my phone.
> I'm really amazed that Cingular think it is ok to lie about this!
> Has anyone else had a similar experience? I have a spare phone that I
> use, but it is as heavy as a brick and I am sick of it.
> Daniel.
Anonymous
May 6, 2004 7:35:28 AM

Archived from groups: alt.cellular.cingular (More info?)

As I understand it, a "world" phone is just one that works on
850/900/1800/1900 bands. Both my Motorola v600 and v400 are such phones and
I had no trouble while on vacation in SF last week.For them to say their
upgrade does not support a world phone makes no sense at all. If there is
any coverage in the 1900 band (as there should be in California) you should
have no trouble.

The fact that you had trouble over the weekends and "like magic" all was
fine on Monday kind've indicates to me that they may have been doing some
kind of maintenance on the weekends, and perhaps extended that maintenance
to weekdays later on.

Here is what MAY have been taking place.....

What you experienced was no reception because there was a tower (or two, or
three) out due to maintenance. The reason your Nokia worked MAY be due to
the fact that perhaps your Nokia has better reception and maybe is just
picking up a distant tower that the T28 is not picking up. After all, isn't
the T28 notorious for bad reception?

Think about it.
Anonymous
May 6, 2004 1:27:47 PM

Archived from groups: alt.cellular.cingular (More info?)

Question for Andrew:

This is a followup question to your detailed explanation of frequency
band licensing issues in California for AT&T, Cingular, etc.

I live in a suburban area of Thousand Oaks (Newbury Park south of the
101)in which there is no usuable 1900MHz coverage on
Cingular/T-Mobile's shared system (I forget the name of that
enterprise). On the other hand, there is an ATTWS on a hilltop about
a half mile from home.

If I purchase a Cingular Blackberry 7280, which is 850/1800/1900
capable, will it operate on AT&T's site, particularly 850, if they
have that capability at that site? I am referring to GPRS data, not
GSM voice.

I'm aware of the recent inter-system roaming agreement, but is that
only for voice, or is it for data, too?

Thanks,

PCW
Anonymous
May 7, 2004 12:42:04 AM

Archived from groups: alt.cellular.cingular (More info?)

pcw@ureach.com (PCW) wrote in message news:<3c514e8d.0405060827.7906559f@posting.google.com>...
> Question for Andrew:
>
> This is a followup question to your detailed explanation of frequency
> band licensing issues in California for AT&T, Cingular, etc.
>
> I live in a suburban area of Thousand Oaks (Newbury Park south of the
> 101)in which there is no usuable 1900MHz coverage on
> Cingular/T-Mobile's shared system (I forget the name of that
> enterprise). On the other hand, there is an ATTWS on a hilltop about
> a half mile from home.
>
> If I purchase a Cingular Blackberry 7280, which is 850/1800/1900
> capable, will it operate on AT&T's site, particularly 850, if they
> have that capability at that site? I am referring to GPRS data, not
> GSM voice.
>
> I'm aware of the recent inter-system roaming agreement, but is that
> only for voice, or is it for data, too?
>
> Thanks,
>
> PCW

GSM roaming is resolved according to Location Area. A Location Area
may be as geographically small as the coverage area of a single BCCH
(e.g. a single sector or cell) or as large as an entire network. The
GSM network itself intelligently knows whom (a roamer of which other
carrier?) is allowed to roam where (in which Location areas?).

As I understand the recent liberalization of the GSM roaming agreement
between Cingular & AT&TWS, the door has simply been thrown wide open.
Previously, only select Location Areas - primarily those where either
Cingular or AT&TWS lacked coincident GSM coverage - were available to
the GSM roamers of the other. But now all Location Areas of both GSM
networks have been made available to all subs of either carrier. In
areas of coincident coverage, a user may freely select either Cingular
or AT&TWS network. And in areas where one is lacking coverage, the
other fills the niche. The preceding should be true for GSM/GPRS -
perhaps EDGE (wherever applicable for Cingular) as well - regardless
of 850 MHz, 1900 MHz, or combined deployment.

If you should acquire a GSM/GPRS 850/1800/1900 Cingular Blackberry
7280, then you should be able to do a manual or automatic network
selection in order to freely utilize the available AT&TWS GSM/GPRS
coverage at your house. The only caveat is that - unless the
Blackberry has the capability to manually select a frequency band
preference - you would likely be subject to the whims of AT&TWS as to
850 MHz or 1900 MHz. My understanding is that many AT&TWS GSM/GPRS
850/1900 sites use primarily or only a 1900 MHz BCCH. In other words,
an idle mobile will camp on a GSM 1900 BCCH but may be assigned to
traffic on a TCH or PDTCH on either 1900 MHz or 850 MHz.

John Navas, I suspect, could either correct or corroborate all of the
above. But I no longer notice his presence in the newsgroup. John,
are you still here?

Andrew
--
Andrew Shepherd
cinema@ku.edu
cinema@sprintpcs.com
http://www.wirelesswavelength.com/
Anonymous
May 7, 2004 10:40:35 AM

Archived from groups: alt.cellular.cingular (More info?)

Andrews,
I appreciate your comprehensive response - thanks very much!

PCW
Anonymous
May 7, 2004 10:02:41 PM

Archived from groups: alt.cellular.cingular,alt.cellular.ericsson (More info?)

"No Access" generally means your handset is being denied registration.
"No Service" would mean that your not receiving a signal.

I would go to a Cingular store and get them to replace your SIM free of
charge.
Your Ericsson phone is called a World phone because it can receive 1800/1900
MHz ONLY (not 800MHz (US) 900 MHz (Foreign) like other newer World phones).
As long as your network settings are not restricting your phone to 1800 MHz
you should be picking up the Cingular 1900 MHz network in the Bay Area with
no problem. But if your getting No Access, something is wrong with your SIM
or your account because your being denied registration in this system.

"Daniel" <zzfreezz2003@yahoo.com> wrote in message
news:648e9f00.0405051225.49296f26@posting.google.com...
> Boris,
> I'm not sure you fully read my posting. The problem is with Ericsson
> World phones that Cingular sold until recently. I also have an old
> Nokia phone that works fine, but it is a single band phone not a world
> phone.
>
> Does anyone out there have an Ericsson world phone and have problems
> with Cingular's new Network upgrade.
>
> When I turn my phone on it comes up with Cingular on the screen and
> then after a couple minutes I get a message saying "No Access". At
> first this only happened on the weekends and then recently it started
> to happen all the time.
>
> Daniel.
>
> "Boris Dynin" <spam@noplease.com> wrote in message
news:<4T%lc.9750$Fo4.123688@typhoon.sonic.net>...
> > I think you're mistaken.
> > I'm in SF Bay Area also.
> > I'm with Cingular and my *old* Nokia phone (at least 3 years old) works
just
> > fine.
> >
> > Boris
> > "Daniel" <zzfreezz2003@yahoo.com> wrote in message
> > news:648e9f00.0405042142.65103252@posting.google.com...
> > > I'm a Cingular customer in the San Francisco bay area. Where Cingular
> > > has recently changed over their GSM network from 1900Mhz to a mixture
> > > of 850Mhz and 1900Mhz. Cingular no longer supports my Ericsson T28
> > > World phone as it is 1900Mhz and 900Mhz only. I bought my phone from
> > > Cingular less than 2 years ago for $200. When I called Cingular
> > > support to complain about the issue they flatly denied that they have
> > > changed anything on their GSM network and told me that it is a problem
> > > with my phone. I explained my phone works fine when I travel outside
> > > of the Cingular's bay area network. They still insisted my phone was
> > > broken and told me to buy a new one. Nothing I said could get them to
> > > admit that they had changed their Network, even when I told them that
> > > the Cingular store had informed me of the Network change they still
> > > denied it. I also asked for a list of phones that Cingular supports
> > > and they said they did not have that information.
> > > I checked their web site and they no longer sell World phones, they
> > > only sell GSM phones that use 850Mhz and 1900Mhz.
> > > Can someone can point me to some Solid information I can use to get
> > > them to admit that they no longer support my phone.
> > > I'm really amazed that Cingular think it is ok to lie about this!
> > > Has anyone else had a similar experience? I have a spare phone that I
> > > use, but it is as heavy as a brick and I am sick of it.
> > > Daniel.
May 8, 2004 11:18:40 PM

Archived from groups: alt.cellular.cingular,alt.cellular.ericsson (More info?)

On 2004-05-05, Daniel <zzfreezz2003@yahoo.com> wrote:
> When I turn my phone on it comes up with Cingular on the screen and
> then after a couple minutes I get a message saying "No Access". At
> first this only happened on the weekends and then recently it started
> to happen all the time.

I got "No Access" when I tried a 1900-only T300 in an area where
Cingular had 850 but not 1900. I assume the phone was trying to roam on
T-Mobile 1900.
Anonymous
May 12, 2004 1:39:04 AM

Archived from groups: alt.cellular.cingular (More info?)

"Andrew Shepherd" <cinema@ku.edu> wrote in message
news:33e89561.0405061942.2c3c436c@posting.google.com...
> pcw@ureach.com (PCW) wrote in message
news:<3c514e8d.0405060827.7906559f@posting.google.com>...
> As I understand the recent liberalization of the GSM roaming agreement
> between Cingular & AT&TWS, the door has simply been thrown wide open.
> Previously, only select Location Areas - primarily those where either
> Cingular or AT&TWS lacked coincident GSM coverage - were available to
> the GSM roamers of the other. But now all Location Areas of both GSM
> networks have been made available to all subs of either carrier. > --
> Andrew Shepherd
> cinema@ku.edu
> cinema@sprintpcs.com
> http://www.wirelesswavelength.com/

Not true. Generally AT&TWS has opened the door to use of all Cingular GSM
coverage, but the converse is not true. In many areas Cingular does not
allow local roaming onto AT&TWS. California is one of those markets.
Anonymous
August 2, 2004 4:35:39 PM

Archived from groups: alt.cellular.cingular (More info?)

[POSTED TO alt.cellular.cingular - REPLY ON USENET PLEASE]

In <33e89561.0405051026.3bcc1745@posting.google.com> on 5 May 2004 11:26:09
-0700, cinema@ku.edu (Andrew Shepherd) wrote:

>On the other hand, AT&TWS in California possesses primarily Cellular
>800/850 MHz licenses as well as overlying PCS 1900 MHz licenses.
>Previously, the Cellular spectrum was reserved exclusively for
>TDMA/AMPS, but AT&TWS is now a dual-band GSM 850/1900 network. As
>both AT&TWS & Cingular have recently opened all Location Areas to each
>other's GSM subs, ...

I don't think so. My unlocked Sony Ericsson Z600 (tri-band world phone) works
fine on Cingular 1900, but is barred from ATTWS 1900 (red crossed circle in
Select Network), in ZIP code 94404 at least, annoying because I'm getting no
Cingular signal but a decent ATTWS signal. My SIM doesn't show ATTWS as a
Preferred Net. This might be a unique provisioning problem, but I doubt it,
since this phone has successfully received at least two OTA updates recently.
I'm checking with Cingular, but haven't gotten a meaningful response yet.

--
Best regards,
John Navas <http://navasgrp.home.att.net/&gt;
Anonymous
August 2, 2004 4:35:40 PM

Archived from groups: alt.cellular.cingular (More info?)

[POSTED TO alt.cellular.cingular - REPLY ON USENET PLEASE]

In <c7s2ka$vau@library1.airnews.net> on Tue, 11 May 2004 21:39:04 -0500,
"NOLA" <tgnr@historicdistrict.com> wrote:

>"Andrew Shepherd" <cinema@ku.edu> wrote in message
>news:33e89561.0405061942.2c3c436c@posting.google.com...
>> pcw@ureach.com (PCW) wrote in message
>news:<3c514e8d.0405060827.7906559f@posting.google.com>...
>> As I understand the recent liberalization of the GSM roaming agreement
>> between Cingular & AT&TWS, the door has simply been thrown wide open.
>> Previously, only select Location Areas - primarily those where either
>> Cingular or AT&TWS lacked coincident GSM coverage - were available to
>> the GSM roamers of the other. But now all Location Areas of both GSM
>> networks have been made available to all subs of either carrier. > --
>> Andrew Shepherd
>
>Not true. Generally AT&TWS has opened the door to use of all Cingular GSM
>coverage, but the converse is not true. In many areas Cingular does not
>allow local roaming onto AT&TWS. California is one of those markets.

That's my understanding and experience as well. My unlocked Sony Ericsson
Z600 (tri-band world phone) works fine on Cingular 1900, but is barred from
ATTWS 1900 (red crossed circle in Select Network), in ZIP code 94404 at least,
annoying because I'm getting no Cingular signal but a decent ATTWS signal. My
SIM doesn't show ATTWS as a Preferred Net. This might be a unique
provisioning problem, but I doubt it, since this phone has successfully
received at least two OTA updates recently. (I'm checking this with Cingular,
but haven't gotten a meaningful response yet.)

--
Best regards,
John Navas <http://navasgrp.home.att.net/&gt;
Anonymous
August 3, 2004 9:44:42 PM

Archived from groups: alt.cellular.cingular (More info?)

[POSTED TO alt.cellular.cingular - REPLY ON USENET PLEASE]

In <10gt5sd4dmhpn17@corp.supernews.com> on Mon, 02 Aug 2004 12:35:40 -0700,
John Navas <spamfilter0@navasgroup.com> wrote:

>In <c7s2ka$vau@library1.airnews.net> on Tue, 11 May 2004 21:39:04 -0500,
>"NOLA" <tgnr@historicdistrict.com> wrote:

>>Not true. Generally AT&TWS has opened the door to use of all Cingular GSM
>>coverage, but the converse is not true. In many areas Cingular does not
>>allow local roaming onto AT&TWS. California is one of those markets.
>
>That's my understanding and experience as well. My unlocked Sony Ericsson
>Z600 (tri-band world phone) works fine on Cingular 1900, but is barred from
>ATTWS 1900 (red crossed circle in Select Network), in ZIP code 94404 at least,
>annoying because I'm getting no Cingular signal but a decent ATTWS signal. My
>SIM doesn't show ATTWS as a Preferred Net. This might be a unique
>provisioning problem, but I doubt it, since this phone has successfully
>received at least two OTA updates recently. (I'm checking this with Cingular,
>but haven't gotten a meaningful response yet.)

Note: OTA = over the air (i.e., over the cellular network)

--
Best regards, HELP FOR CINGULAR GSM & SONY ERICSSON PHONES:
John Navas <http://navasgrp.home.att.net/#Cingular&gt;
!