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

In <8Zzcg.7253$ix2.1589@trnddc03> on Tue, 23 May 2006 08:45:56 GMT, "Joseph
Wind" <jw@neoplastic.ph.invalid> wrote:

>Typically the new phones work better with high capacity SIMs. The higher
>capacity SIMs usually have more features built in features to support the
>new technology in the phones. At least that was what I was told when I
>upgraded to my current V3 RAZR. I had an original PacBell GSM SIM, I got 10
>years ago, and was told it would not work well in the new phones due to it's
>memory capacity. Good thing I had a new 64K SIM I got from another phone or
>else I would have been charged for a new SIM. I wish they had 128k SIMs
>here in the States.

In the case of Cingular in the USA:

64K SIM: The only benefit to a 64K SIM is ENS, which allows Cingular to
manually "home" the phone OTA (over the air) to either the "blue" (old ATTWS
network) or the "orange" (old Cingular) network, but only with newer
ENS-capable mobiles. (Even without ENS mobiles will still roam freely on both
networks, but not necessarily as well.) Except for that, a 32K SIM works just
as well as a 64K SIM, and when the two networks are finally merged (as
expected later this year), ENS will become pointless, eliminating the benefit
of the 64K SIM even for ENS-capable mobiles. There's no additional benefit to
a more costly 128K SIM (since Cingular isn't using SIM-based applications).

3G SIM: Needed for the new Cingular UMTS mobiles.

--
Best regards, SEE THE FAQ FOR CINGULAR WIRELESS AT
John Navas <http://en.wikibooks.org/wiki/Cingular_Wireless_FAQ>

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

In <QPzcg.8630$kR6.3000@trnddc05> on Tue, 23 May 2006 08:36:00 GMT, "Joseph
Wind" <jw@neoplastic.ph.invalid> wrote:

>I learned my lesson buying Cingular GSM phones, that are supposedly Tri or
>Quad band phones. Most of them are built to Cingular specs and they are
>pretty much 850/1900Mhz only. The only way to know for sure is to try the
>phone out of the country. T-Mobile on the other hand are pretty generic as
>they come and are more compatible worldwide.

Cingular-branded phones with appropriate bands actually work just as well out
of the USA as T-Mobile. Both Cingular and T-Mobile offer standard 850/1900
dual-band USA-only phones (e.g., Nokia 6010), 850/1800/1900 tri-band phones
(e.g., Nokia 6101), and quad-band phones (e.g., Motorola RAZR V3).

--
Best regards, SEE THE FAQ FOR CINGULAR WIRELESS AT
John Navas <http://en.wikibooks.org/wiki/Cingular_Wireless_FAQ>