One particular area of excellence is the ultrawide camera, which is the exact same on both. This 50-megapixel sensor is one of the largest around for an ultrawide, and that's perceptible in low light, where snaps are sharper and more color-accurate than ultrawide images from rivals.
On the other hand, the 3.3X optical zoom camera, only available on the OnePlus 9 Pro, is just OK. You'll find a lot of grain even with daytime shots, and it's practically useless when the sun goes down, as it's not compatible with OnePlus' Nightscape mode. It just doesn't match the photo quality from phones like the Galaxy S21 Ultra (not to mention that fact that it doesn't zoom as far as the Galaxy).
Speaking of compatibility, the dedicated night mode doesn't work with the 16-megapixel front camera on either phone. As a result, low-light selfies feel subpar.
The 9 Pro makes up for these shortcomings in the video department. Its 4K and 8K video footage—yes, we're at 8K now—is remarkably brighter and more stabilized than clips from Samsung's S21 range. This just might be my favorite Android phone for video.
Rounding out the camera systems on both devices is the ability to capture surprisingly good macro photos. There's also a Pro mode, which lets you tweak camera settings like ISO and shutter speed to capture 12-bit RAW photos that look excellent once edited in apps like Adobe Lightroom.
Ace Hardware
The rest of the hardware in these phones is excellent, and pretty much what you'd expect from the company. The 9 series is powered by the speedy Qualcomm Snapdragon 888 chip with 8 gigs of RAM, upgradable to 12 gigabytes if you need that much. (You really don't.) That's more than powerful enough to handle most, if not all, intensive games and apps.
A new cooling solution called Cool Play improves heat dissipation during gaming; I noticed the 9 Pro stayed comfortably warm after an hour of Oddmar. A very small number of games will also support a feature called Hyper Touch at launch, which improves the syncing time between the display and the processor. OnePlus says this should make fast-paced games feel more responsive, but I wasn't able to test the feature. Despite these additions, I'd still pick the Asus ROG Phone 5 if I spent a ton of time with mobile games. It offers a more ergonomic experience overall.
The AMOLED displays on both OnePlus phones are bright, colorful, and sharp—Ma Rainey's Black Bottom on Netflix looks exceptional, though color tones are a tad warmer than I'd like. The dual speakers sound pretty good too.
Both phones have 120-Hz screen refresh rates for more fluid interactions, but the 9 Pro's 6.7-inch screen differentiates with the use of an LTPO (low-temperature polycrystalline oxide) backplane to auto-adjust the refresh rate based on what you're doing. It can scale the rate from 1 Hz if you're starting at a static image, up to 120 Hz if you're doing something like scrolling through Instagram. It's a win for power efficiency, but it's only available on the Pro model. You won't find this feature in the OnePlus 9's 6.55-inch screen. (The Pro also has a curved display, whereas the OnePlus 9's screen is flat.)