Nope your not. It depends on where your located that decides which band you will access. If you live in Northern California it's 1900. If you arrive somewhere else your GSM phone will chose another band.

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"What you hear in a great jazz band is the sound of democracy. “The jazz band works best when participation is shaped by intelligent communication.”
Harmony happens whenever different parts get to form a whole by means of congruity, concord, symetry, consistency, conformity, correspondence, agreement, accord, unity, consonance…….