But exactly how do they compare? We've spent some time testing the OnePlus 9 Pro and OnePlus 9 to see what they're like as well as looking into details of the OnePlus 9R to see how they stack up against each other.
You can also read our separate feature to see how the OnePlus 9 series compares to Samsung's Galaxy S21.
- 9 Pro: Curved display, punch-hole camera, rectangular camera housing, IP68
- 9: Flat display, punch-hole camera, rectangular camera housing
- 9R: Flat display, punch-hole camera, rectangular camera housing
The OnePlus 9 Pro has a curved display, a glass body and a metal frame, while the OnePlus 9 comes with a plastic frame, glass body and a flat display. The OnePlus 9R also has a flat display.
What that means in daily use is that while the 9 Pro is bigger than the regular OnePlus 9, it feels more comfortable to hold in one hand. Those curves add the illusion of slimness. The plastic frame also means the regular model feels a bit less premium.
On the flip side, having a flatter display on the regular model means it's a bit easier to use in some situations because you don't need to worry about accidental touches while gaming or using the camera.
Two lenses are larger on the rear camera for all three OnePlus 9 devices. Each with metal rings around them to give them a purposeful look. The standard OnePlus 9 has a triple rear camera, while the OnePlus 9 Pro and OnePlus 9R have a quad rear camera, though with different lenses, as we talk about further down.
OnePlus 9 Pro also features IP68 water and dust resistance. The other two models do not offer an official waterproofing rating.
The OnePlus 9 Pro is the largest and heaviest of the three OnePlus 9 devices, measuring 163.2 x 73.6 x 8.7mm and weighing 197g, while the OnePlus 9 measures 160 x 74.2 x 8.7mm and weighs 192g. The OnePlus 9R measures 161 x 74.1 x 8.4mm so it's around the same size as the OnePlus 9 but weighs 189g, making it fractionally lighter.
- 9 Pro: 6.7-inch, Quad HD+, LTPO, 120Hz variable
- 9: 6.55-inch, Full HD+, 120Hz
- 9R: 6.55-inch, Full HD+, 120Hz
The OnePlus 9 Pro offers a 6.7-inch AMOLED display with LTPO that supports a variable refresh rate of 1Hz to 120Hz. The OnePlus 9 has a 6.55-inch AMOLED display with a 120Hz refresh rate - which isn't variable - while the OnePlus 9R has a 6.55-inch display, also with a 120Hz refresh rate that isn't variable.
The OnePlus 9 Pro has a Quad HD+ resolution screen that delivers a pixel density of 525ppi, while the OnePlus 9 and 9R have a Full HD+ resolution for a pixel density of 402ppi.
The OnePlus 9 Pro, OnePlus 9 and 9R offer a peak brightness of 1300nits and support for HDR10+, like the OnePlus 8T. As mentioned, the OnePlus 9 Pro sports a curved display, while the 9 and 9R have flat displays. All three devices have under-display fingerprint sensors.
When you put the Pro and regular model side-by-side, you do notice a difference in sharpness if you look closely. The Pro is definitely the one with a crisper panel. However, they're very similar when it comes to colour balance and brightness. The non-Pro does have a habit of crushing blacks a bit to make the screen feel a bit too contrasty at times.
Hardware and specs
- 9 Pro: Qualcomm Snapdragon 888, 8/12GB RAM, 128/256GB storage, 4500mAh
- 9: Qualcomm Snapdragon 888, 8/12GB RAM, 128/256GB storage, 4500mAh
- 9R: Qualcomm Snapdragon 870, 8GB RAM, 128GB storage, 4500mAh
The OnePlus 9 Pro and OnePlus 9 run on the Qualcomm Snapdragon 888 chipset, while the OnePlus 9R runs on the Qualcomm Snapdragon 870.
In terms of RAM, the OnePlus 9 Pro and OnePlus 9 come in 8GB and 12GB options with storage options of 128GB and 256GB, while the OnePlus 9R has 8GB of RAM and 128GB of storage.
Both Pro and regular models feel as fast and responsive as each other in daily use, so you'll never have to worry about games or apps taking ages to load, or animations on the screens responding slowly to gestures.
Real life battery longevity is similar too, with both the Pro and regular models easily making it through a day, even with 3-4 hours of screen time. Both phones would often get to bed time with between 30-40 per cent spare.
The OnePlus 9 Pro, OnePlus 9 and OnePlus 9R have 4500mAh battery capacities and all three support 65W fast charging. Wireless charging is also supported on the 9 and 9 Pro, though only 15W on the 9 and 50W in the Pro. It isn't offered on the 9R.
That speedy charging means battery anxiety never happens with the 9 and 9 Pro. When the battery empties on either you only need to plug it in for half an hour and it's fully charged again.
- 9 Pro: Quad camera, Hasselblad partnership
- 9: Triple camera, Hasselblad partnership
- 9R: Quad camera
The OnePlus 9 Pro offers a quad rear camera, while the OnePlus 9 has at triple rear camera. Both have the Hasselblad partnership, which involves colour tuning and sensor calibration.
The OnePlus 9's triple camera is made up of a 48-megapixel main camera with f/1.8 aperture, a 50-megapixel ultra wide-angle camera with f/2.4 aperture and a 2-megapixel monochrome sensor.
The OnePlus 9 Pro also offers a 48-megapixel main sensor with f/1.8 aperture but it's a custom Sony IMX789 sensor and it supports optical image stabilisation (OIS), while the 9 has a Sony IMX689 sensor and no OIS. A 50-megapixel ultra wide sensor is also on board the 9 Pro, along with a 2-megapixel monochrome sensor, but it also adds an 8-megapixel telephoto sensor with f/2.4 aperture.
In daily experience - when it played nice - the Pro had the better cameras, but results were so inconsistent it wasn't always great. The colour balance between the ultrawide and primary lenses didn't always match well at all, while the zoom camera delivered mushy shots lacking in detail even at its lowest zoom setting.
The two main cameras on the OnePlus 9 were much more aligned when it came to colour reproduction and the 2x digital zoom on the main camera was more reliable.
The OnePlus 9R also has a quad camera, like the 9 Pro, but it has the same specs as the OnePlus 8T. That means there's a 48-megapixel main camera, 16-megapixel ultra wide angle camera, 5-megapixel macro camera and 2-megapixel monochrome lens.
As mentioned, all three OnePlus 9 devices have a punch hole front camera. The 9 and 9 Pro have a 16-megapixel snapper on the front.
- 9 Pro: From £829
- 9: From £629
- 9R: 39,000 rupees, India only
The OnePlus 9 starts at £629 in the UK for the 8GB of RAM and 128GB of storage model. The 12GB of RAM and 256GB of storage model costs £729 in the UK, making it more expensive than what the OnePlus 8 started at when it first launched, costing $699 in the US and £599 in the UK.
The OnePlus 9 Pro starts at £829 in the UK for the 8GB RAM and 128GB of storage model, with the 12GB RAM and 256GB storage model costing £929. This too is more expensive than the 8 Pro, which started at $899 in the US and £799 in the UK when it first arrived.
The OnePlus 9R will be available in India only, from the beginning of April. It will cost 39,999 rupees, which is around £390.
The OnePlus 9 Pro offers a larger, curved display, variable refresh rate, more capable camera, metal frame and waterproofing over the regular OnePlus 9. It also has faster wireless charging support, but you pay quite a bit extra for those features compared to the regular OnePlus 9.
When you consider the camera performance and how many important features are just as good on the regular OnePlus 9, it doesn't seem wise to spend the extra. At least, not until the company solves its camera problems.
The OnePlus 9R is only available in India, but it offers the same display and battery as the regular OnePlus 9. It doesn't have the Hasselblad partnership and it has a slightly lower processor, but otherwise it offers some great specs under its hood for the price.