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  1.    #1  
    Does anyone know how to put the Centro into test mode and how to read the results? I need to determine what frequency range (band) my local cell site is using in order to diagnose some issues with an in building booster. GSM may use one of several bands...especially in a remote area.
    Mark Bergman
  2. #2  

    I have CDMA version so have not seen layout of GSM test screen. But for GSM, channels around 100-200 are 800MHz band, while channels around 500-800 are 1900MHz. T-Mobile only uses 1900, AT&T uses both bands.
  3.    #3  
    Thanks, but this string doesn't seem to work on GSM. When I entered it from the phone screen and hit the send button, I get "operation failed".
    Mark Bergman

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