https://www.cnet.com/news/huawei-p30-pro-quad-rear-camera-and-screen-specs-leaked/

A new 20-megapixel camera with an f/2.2 wide-angle lens will also be one of the four on the back. LG has offered a wide angle lens on its cameras for years. Recently, Samsung added an ultra-wide-angle lens to the new Galaxy S10, S10E and S10 Plus.

Interestingly enough the P30 Pro will have a 6.47-inch display which is a tad larger the 6.39-inch screen on the P20 Pro. However, bigger is not always better. The P30 Pro screen will have a resolution of 2,340x1080 pixels, which is less than that on the P20 Pro.