7100T on Cingluar ?

[goldbergs]

Are the 7100T and 7100g phones interchangeable if unlocked?

I am using a 7100T on t-mobile and the service is really poor. My associate's 7100g in Cingular indicates more than 10 dbm signal strength.

If I change to Cingular can I just put their SIM card into the unlocked 7100t?

ALSO - I noticed that the phones are a lightly different shape. Does anyone know if the insides are identical or are there possible differences in the antenna?

Thanks

[sinanju]

The phone will work fine, if unlocked, on Cingular. Cingular has 850MHz towers and if you connect to one of them, your indoor reception will be better -- the range is shorter on the lower frequency, but building penetration is better.

[jasonb]

Yeah, once your 7100t is unlocked. You should be able to insert the sim card from your Cingular phone and it should work properly.

[ericboo]

But you will have to pay more for the monthly data service.

I went with Tmo but am returning my 7100 due to poor service indoors, but I thought Cingular in my NY area pigybacked Tmobile's towers, so would there still be 850mhz service for Cingular?

I would probably switch to Cingular if that was the case, otherwise it is back to Nextel's 7520.