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Nov 3, 2010, 8:11 PM
I'm hoping to get the new Motorola Defy from T-Mobile, and (given it has WCDMA850) use it in conjunction with my AT&T account for my bouldering/kayaking excursions. Correct me if I'm wrong, but it should work on AT&T's data network? I know the places I frequent utilize the lower frequency spectrum, so theorhetically I would have data access. Am I right in assuming that all I need to do is below?

1) Get phone at retail online or at T-Mo
2) Unlock phone
3) Change Network Settings within device
4) Register the phone on my account with AT&T

I work for AT&T, so I figure the last two steps will be easy enough. Is it relatively easy to get newer phones unlocked? I've done it with year-old phones rather successfully.

Thanks for all helpf...

Nov 3, 2010, 9:27 PM
i would assume this would be better asked in the tmobile forum... but as long as you're in an area where you have service that at&t and your phone support with an at&t sim and the correct network settings i dont see why it wouldn't.

Nov 3, 2010, 10:28 PM

Hypothetically you can use a Moto Defy on AT&T. I do see a few issues.

1) SInce you work for att, be sure your market runs 850 mhz. Some markets on the West and East coast still use 1900mhz.

2) usually it takes about 30 days for new handset unlock codes to be loaded in unlocking software systems. So if you can wait, that isn't a problem.

3) The last time I used a T-Mo unlocked phone on att, T-Mobile hides the menu settings to change out the WAP and MMS settings. So only voice and SMS would work.

4) If you can get these switched out, then you should be able to get away with the $10 or $15 non smart phone data package as att doesn't recognize the T-Mo IMEI.

5) You would have better luck trying to find an unlocked ...

Nov 5, 2010, 1:22 PM
All great tips, thank you!

1) All but one area in my town are 850, at least on the UMTS side. My parent's home town is also fully covered by both spectrums!

2) I took your suggestion and looked at European and Canadian models. So far the only ones I can find use the UMTS900 spectrum. If I find one that works, the back plate is black rather than white, which should make scratches less visible.

3) My current AT&T Android phone at least has very easy tools for swapping your data settings.

4) I would be switching back and forth between this phone and another AT&T droid, so I would most likely keep the $30 unlimited, and not even muck with changing the IMEI on the account.

5) What other countries use the 850 spectrum?

Nov 5, 2010, 1:23 PM

Nov 6, 2010, 1:34 PM

In Europe and Asia, WCDMA is being deployed in the all-new 2100 MHz frequency band. In North America, WCDMA is being deployed in the existing 1900 MHz (PCS) and 850 MHz (cellular) bands, as well as the newer 1700 MHz (AWS) band.

Nov 5, 2010, 7:50 AM
ya you may just want to buy and unlocked verison of the phone which i am sure they sale online...i would check mobilecityonline.com they sell tons of unlocked phones

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