“The Wave 525 measures 109.5 x 55 x 11.9 mm, and weighs 100 grams. The Wave 533 is some 3 mm thicker – i.e. it measures 109.5 x 55 x 15.1 mm, and a bit heavier with its 116 grams. The former model is your typical sensor phone; it is compact and fits into a shirt or jeans pocket just fine. The Wave 533 is almost the same in size yet doesn’t feel as good in one’s hand. Probably, this conclusion is a result of my being able to compare both devices side by side. The Wave 525 appears somewhat handier to me. On the other hand, you may consider the hardware keyboard to be a deal breaker and put up with some extra bulkiness because of that.” Read more here: