I switched from AT&T to tmobile a couple years ago to get on tmobile's
200 minute plan. I found this which mentions some AT&T network changes
that result in them trying to replace old phones:
http://www.phonecan.com/index.php/customer-qustions-at-t-sent-me-a-letter-for-a-free-upgrade-with-no-contract
"*Shutdown of the Cellular One Network - *AT&T purchased Cellular One
and began migrating customers late in 2007. Customers had the option of
keeping the same phone and were sent a special SIM card to make it
compatible with the AT&T network. In order to make the Cell One phones
compatible certain parts of the legacy Cell One network had to be
maintained even after the migration process was complete. In late 2010
the campaign for the network shutdown began and the customers still
using their Cell One phones were given the option of a free upgrade with
no contract or yet another SIM card that would make their phones
compatible with the AT&T network.
*Shutdown of the (Original) AT&T Wireless Network* -- Cingular purchased
AT&T /Wireless/ in 2004. Cingular changed its name to AT&T /Mobility/
in 2007 after one of its parent companies purchased AT&T /Incorporated/,
provider of landline services. Years later there are still a few
customers on the network using their same handsets from AT&T wireless
that are at least 6 years old. The free no-contract upgrade letters
began going out in early 2011. The actual shutdown happens in May. As
of yet I have not heard of the option to just get a new SIM.
*Single-Band GSM (2G) 1900mhz Handset Users -- *After the merger of AT&T
Wireless and Cingular in 2004, Cingular owned licenses in the 850 and
1900 band throughout most of the country. Cingular "dual cast" its GSM
signal in both bands until it began deployment of its 3G network in
2005. The 3G technology then took over the 1900 band. If you're in one
of the 2G areas that are scheduled to be upgraded to 3G in the soon
future and you have one of these phones, you would have received one of
these mailers offering a free upgrade with no contract.
*Users of 2G Phones with High Voice Usage* -- I don't fully understand
the technological aspects of this one. All I know it the users who
currently using 2G phones in certain states (California is one of them)
are being sent free-upgrade-with-no-contract mailers. I could speculate
that the 3G handles voice calls more efficiently and they want to keep
both 2G and 3G networks running smoothly, but that's purely speculation."
On 08/25/2011 09:31 PM, error wrote:
AT&T has been calling and text'ing for the last 2 months. They have informed
me that my phone will no longer be compatible with their network on Monday
Aug 29-30, 2011. Has anyone else running into this issue?
--
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