What fequencies must you have on a gsm phone in order for it to work with Tmobile sim cards?

Hi I,





T-MOBILE: Runs GSM only, and only at PCS (1900 MHz) frequency.





AT%26amp;T uses TDMA and GSM, as separate networks, and at both PCS (1900 MHz) and cellular (800/850 MHz) frequency.





Norm

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