Description USA providers are all on 850/1900Mhz and pratically all the rest of the world uses 900/1800Mhz. Spectrum SM5100BGSM/GPRS module: a miniature, single-side board, quad-band GSM 850/EGSM 900/DCS 1800/PCS 1900 module, ready for integration in various kinds of Fix wireless phones and other wireless devices.
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