In common GSM-900 is most widely used. Fewer operators use GSM-1800.
Read moreWhich network band is best?
speed. If you want better range, use 2.4 GHz . If you need higher performance or speed, use the 5GHz band. The 5GHz band, which is the newer of the two, has the potential to cut through network clutter and interference to maximize network performance.
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