Dual-mode Handsets for Dummies

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UMB (Ultra Mobile Broadband) - An Overview

Among the most important advantages of CDMA2000 is its spectral efficiency, which allows additional customers to share exactly the same frequency band, leading to higher capability and much better general performance. CDMA2000 is likewise backward appropriate with 2G CDMA networks, which allows for a sleek changeover from 2G to 3G services.?? ?????

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