The Pixel 2 that I am using has a 5.0-inch screen with 145.7 x 69.7 x 7.8 mm physical dimensions and 143 grams of weight. The just announced Pixel 4a has a larger 5.81-inch screen but the physical dimensions are 144 x 69.4 x 8.2mm and it also weighs 143 grams. In other words, the 4a is actually smaller than my Pixel 2 but a little thicker to accommodate a larger battery but weighs the same. I am really happy about those physical specs and looking forward to getting mine!