Size and weight are big decision factors when you are trying to find the ideal phone for your needs. In this section, we are going to illustrate the OnePlus 8 and OnePlus Ace 3 Pro side-by-side from the front. OnePlus 8 has external dimensions of 160.2 x 72.9 x 8.5 mm (6.3 x 2.9 x 0.3 inches) and weighs 180 g (6.35 oz). OnePlus Ace 3 Pro has external dimensions of 163.3 x 75.3 x 8.9 mm (6.4 x 3.0 x 0.4 inches) and weighs 212 g (7.48 oz).
Below you can see the front-view size comparison of the OnePlus 8 and the OnePlus Ace 3 Pro.
OnePlus 8 is clearly the smaller of the two cameras. Its body is 2.40 mm narrower, 3.10 mm shorter and 0.40 mm thinner than OnePlus Ace 3 Pro.
Comparison image of the OnePlus 8 and the OnePlus Ace 3 Pro Size, Weight and External Dimensions - Front View