Reviewing Samsung Galaxy S21 Ultra and OnePlus 9 Pro

Here is a quick comparison between Samsung Galaxy S21 Ultra and OnePlus 9 Pro. Read this post before you get your new device.

OnePlus 9 Pro vs Galaxy S21 Ultra

In the world of smartphones, it’s unlikely to get the best and definitely impossible to know every phone from the inside out. But if you plan smartly, you can get at least one of the best ones. This led us to write this content, comparing two recently launched smartphones, Samsung Galaxy S21 Ultra and OnePlus 9 Pro.

Let’s first start with a simple comparison.

Samsung Galaxy S21 Ultra vs OnePlus 9 Pro

Samsung Galaxy S21 UltraOnePlus 9 Pro
Display6.8″ WQHD+ Dynamic AMOLED 2X display (120Hz adaptive refresh rate)6.7″ QHD+ AMOLED LTPO curved display (120Hz adaptive refresh rate)
Screen resolution3200 x 14403216 x 1440
SoCQualcomm Snapdragon 888 / Samsung Exynos 2100Qualcomm Snapdragon 888
Storage128GB/256GB, non-expandable (expandable in some countries)128GB/256GB (UFS 3.1); Non-Expandable
Rear cameras108MP (f/1.8 aperture, OIS, 0.8um pixel size. Produces 12MP images with 2.4um pixel size)
12MP (ultrawide, Dual Pixel AF, 120-degree FoV, f/2.2 aperture, 1.4um pixel size)
10MP (telephoto, Dual Pixel AF, OIS, f/2.4 aperture, 1.22um pixel size, optical zoom 3x)
10MP (telephoto, Dual Pixel AF, OIS, f/4.9 aperture, 1.22um pixel size, 10x optical zoom, 100x Space Zoom)
48MP (Sony IMX789, f/1.8 aperture, 7P lens, OIS, EIS, 1.12um pixel size 48MP images, 2.24um pixel size 12MP images (4-in-1 binning), 23mm focal length)
50MP (ultra-wide, f/2.2 aperture, Freeform Lens, 7P lens, Sony IMX766)
8MP (telephoto, 1.0um pixel size, f/2.4 aperture)
2MP (monochrome)
Front camera40MP (f/2.2 aperture, 80-degree FoV, 0.7um pixel size, PDAF)16MP (Sony IMX471, 1.0um pixel size, EIS, Fixed Focus, f/2.4 aperture)
Battery5,000mAh, non-removable, fast battery charging (USB PD 3.0), Fast Wireless Charging 2.0, Wireless PowerShare4,500mAh, non-removable, 65W wired charging, 50W wireless charging, reverse wireless charging
Dimensions165 x 75.6 x 8.9 mm163.2 x 73.6 x 8.7mm
Weight229 grams197 grams
Connectivity5G, LTE, NFC, Bluetooth 5.2, Wi-Fi, USB Type-C5G, LTE, NFC, Bluetooth 5.2, Wi-Fi, USB Type-C
SecurityIn-display fingerprint scanner (ultrasonic)In-display fingerprint scanner (optical)
OSAndroid 11
One UI 3.0
Android 11
Price$1,199.99$969 / $1,069


Both devices are quite large and quite slippery, as they’re made out of metal and glass. However, the Galaxy S21 Ultra is relatively larger, wider, heavier, and thicker than the other.

The rear camera on Galaxy S21 Ultra is bumped out whereas, the OnePlus 9 Pro has that regular design. Both phones come with skinny bezels and curved displays.


Both devices are featuring fairly large and curvy displays. The Samsung Galaxy S21 Ultra supports Samsung’s S Pen stylus. The OnePlus 9 Pro is protected by the Gorilla Glass 5. Both devices have adapted the LTPO technology, which means they offer an adaptive refresh rate.


The Snapdragon 888 SoC adds value to the phones’ performance, with top-of-the-line RAM and flash storage, and comes with up-to-date software.

When tested, both devices proved to be fairly well-performing. No problems were seen while browsing, consuming multimedia, multitasking, filming, etc., in addition to handling games like champs.


The Samsung Galaxy S21 Ultra can go as long as 7 hours whereas, the OnePlus 9 Pro is less-performing in terms of battery life which goes for around 6 hours.


The OnePlus 9 Pro cameras are not as good as we were expecting. On the other hand, the Galaxy S21 Ultra delivers better photos. However, the Galaxy S21 Ultra gives a bit sharper photos with its main camera, also has the periscope camera, which is missing from the OnePlus 9 Pro does not deliver.

Both phones are good in low light. But again, the Galaxy S21 Ultra performs better.


Both devices come with a stereo speaker setup, delivering fairly good sounds. Speakers on the two devices can get quite loud, keeping the distortion barely noticeable.