The W850i has UMTS, better battery(950 mAh), W830i has 900 mAh.
The W830i has HSCSD, EDGE and 1 GB card included.
The W850i has UMTS, better battery(950 mAh), W830i has 900 mAh.
The W830i has HSCSD, EDGE and 1 GB card included.
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