15.4% more mAH battery than OptimaSmart OPS-51D. More battery capacity reduces the need to charge your battery again. (1500 mAH, Li-Po vs. 1300 mAH, Li-ion)
24.0 grams Lighter than OptimaSmart OPS-51D. light weight phone is easy to hold and can kept in your pocket for long time. (102 grams vs. 126 grams)
14.3% bigger screen size than OptimaSmart OPS-51D. The bigger the screen size is better the user experience of reading and watching movie or video songs. (4.0 Inch vs. 3.5 Inch)
41.2% Higher pixel density than OptimaSmart OPS-51D. High pixel density shows sharper text and extremely detailed photos and videos. (233 ppi vs. 165 ppi)
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