Phones forum

General discussion

TDMA to GSM

by cklind / May 3, 2007 10:14 AM PDT

Where to start... Well I have a very old analog cell phone with AT&T (now Cingular). Of course I have been informed that this phone will no longer work after this year. Also Cingular has been offering me a lot of options to acquire a new (GSM) phone. Problem is that every offer is attached to some package plan or other. I would like to keep the plan I have had for years because of its very low cost... the least expensive offered plan will cost me almost 1000% more by comparison. Can I buy a GSM phone from... (wherever)... and just program it to my current phone number? Are there any options that allow for me to obtain a very plain (GSM) phone (I don't need text, nor camera, etc) and keep the plan I am on?

thanx,

ken

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TDMA to GSM
by yetunlin / May 5, 2007 3:15 AM PDT
In reply to: TDMA to GSM

Yes, u can buy it in ebay. it is so cheap.

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TDMA to GSM
by dave1973 / May 5, 2007 7:22 AM PDT
In reply to: TDMA to GSM

I believe Cingular/at&t won't let anyone keep an old plan, since it was discontinued, and changing from analog or TDMA to GSM will typically involve a plan change. Both TDMA & analog use ESN's (Electronic Serial Numbers), while GSM use SIM cards, which I believe the SIM card uses an EIME number(forgot the actual term for the number used on SIM cards, and I activated a pre-paid phone for a co-worker). With that in mind, Cingular/at&t isn't likely to let the op keep the old plan when upgrading phones. Just like USCC in the Chicago market, they occasionally advertise the unlimited calls plan for $69. That plan is a local plan, and all minutes must be used on the network in the local calling area. Off the network and even if a person's in another USCC market, but outside of the local calling area incurred roaming charges. That plan only allowed certain phones, and the plan was for the life of that phone. If a person needs a different phone, USCC mandates a change in calling plan. So something like that might happen at Cingular/at&t as well.

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phone
by birdmantd Forum moderator / May 5, 2007 10:59 AM PDT
In reply to: TDMA to GSM

Once a phone is changed from TDMA to GSM a plan change will be required in 99.9% of the time, whether you buy the phone from Cingular or supply your own equipment. The fact still remains that you would have to go to a store or call customer service to activate the new handset. One exception is if you had a TDMA nation plan, you might be able to keep it as is but that is not guaranteed.

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