[kanjii]

Do unlocked phones work just as good as locked phones from their carriers? Example would be an unlocked Rizr vs a t-mobile rizr.....same sound quality, etc?

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› See More: Unlocked phones and services

[kanjii]

Yes they do. Whether or not the phone is unlocked makes no difference to how it will sound. You will need to configure the phones settings though in order to use all of the phones features such as MMS, and TMobiles Tzones.
T-Mobile Wireless Data Configurator

Would that also work for the RIZR, but on the Cingular/ATT network? That is what I am planning to do.

[cell-man]

I cant see why not. Unlocked phones are the best for sure

[tashal]

A lot of unlocked phones don't have as many features as the phones which are locked to their carrier, that's why a lot of websites only guarantee a voice call.