23.3% more mAH battery than OptimaSmart OPS-51D. More battery capacity reduces the need to charge your battery again. (1850 mAH, Li-ion vs. 1500 mAH, Li-Po)
12.5% 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. (4.5 Inch vs. 4.0 Inch)
6.9% Higher pixel density than OptimaSmart OPS-51D. High pixel density shows sharper text and extremely detailed photos and videos. (233 ppi vs. 218 ppi)
Compare Price