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OnePlus 6T vs Galaxy S9: How flagships killer competes against Samsung's finest?

02 November 2018 5

Finally, the wait is over for tech enthusiasts as the Chinese flagship killers manufacturer wraps off the cover from the much awaited OnePlus 6T. The latest device is in rumors and leaks from the past few weeks and almost everything was leaked ahead of its official unveiling. As expected to be the latest "T" model the OnePlus 6T doesn't bring new design or hardware instead most of the changes are iterative. It is pretty much understandable considering the iterative model is out almost after six months of OnePlus 6.

The OnePlus 6T is the company's latest best offering to take on the latest flagships of H2 2018. Being the latest high-end phone the OnePlus 6T not only have to compete against latest premium phones but also against one of the best premium phones of this year like Samsung's Galaxy S9. The Galaxy S9 is out for almost six months but still, it is considered one of the best premium phone in the market. Those who are looking for a new flagship device do consider Galaxy S9 as well.

Today we will put the latest OnePlus 6T in a head-to-head comparison against Samsung's Galaxy S9 to know in detail the real differences and similarities between the two devices. Our comparison will also help out readers to better understand whether the latest flagships killer is capable to challenge the Samsung's current-gen flagship or not? Without any further delay, let's start with the design.

74.9 x 157.5 x 8.2 mm
6.41 inches - 2340x1080 px
68.7 x 147.7 x 8.5 mm
5.8 inches - 2960x1440 px
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In terms of design, both are beautifully crafted phones. The Galaxy S9 retains the design which Samsung introduced last year with the Galaxy S8, there are few refinements as well. Both the phones have an aluminum frame with glass covering the rear side. The rear glass on both the devices is gently curved from the edges so that the device can be grabbed easily. Despite having full front-facing display the Galaxy S9 has significant bezels on the top and bottom of the display.

On the other hand, OnePlus 6 was introduced with a notch design, the company further reduced it by opting a waterdrop notch. Both the devices are sleek and look quite striking. In terms of looks, both are equally good to be rated as one of the best looking phones of this year. As far as durability is a concern both the devices are fragile due to glass rear.

The Galaxy S9 is an IP68 certified phone which means it can resist under 1.5 meters deep water for 30 minutes without any damage. OnePlus once again not interested in bringing any IP-rating for their latest phone. Another important aspect is Galaxy S9 has the traditional 3.5mm headphone jack whereas the OnePlus 6T is the company's first phone without headphone jack instead it has USB-C port.

The OnePlus 6T measurements are 157.5 x 74.8 x 8.2 mm and weigh 185g whereas the Galaxy S9 dimensions are 147.6 x 68.7 x 8.4 mm and weigh 163g. In terms of colors options, the 6T is initially available in Midnight and Mirror Black only whereas the S9 was announced in Lilac Purple, Midnight Black, and Coral Blue colors.


As far as the display is a concern both the devices have AMOLED display panel so you don't have to worry about colors vibrancy or deep blacks. The OnePlus 6T comes with a gigantic display of 6.41-inches with a Full HD+ screen resolution of 1080 x 2340 pixels. The display aspect ratio is 19.5:9 and the pixels density is 402 pixels-per-inch.

The Galaxy S8 isn't packed with a large display as the Galaxy S9 instead it comes with a 5.8-inches display with Quad HD+ screen resolution of 1440 x 2960 pixels. The aspect ratio is 18.5:9. In terms of sharpness, the Galaxy S9 has the upper hand due to better screen resolution. Although currently the Galaxy Note 9's display is rated as best in the market by Display Mate the S9's display was the first when it was announced. Now it's up to you whether you prefer the water drop notch display of OnePlus 6T or the Galaxy S9's Quad HD+ panel with minimal bezels at top and bottom of the display.


Being the premium flagships both have the latest best from Qualcomm i.e. Snapdragon 845. The Galaxy S9 US variant has the Snapdragon 845 whereas the global variant has Exynos 9810. The 6T is specially optimized to perform ultra fast so you may find it relatively faster than the Galaxy S9.

The OnePlus 6T is available in three configurations, the base model has 6GB RAM with 128GB storage whereas the top of the line model has 8GB RAM with either 128GB or 256GB native storage. It lacks support for memory expansion via MicroSD. The Galaxy S9 comes in one configuration with 4GB RAM and either 64GB or 128GB built-in storage which is further expandable via MicroSD. No matter whether you choose OnePlus 6T or the S9 both provides top-level performance.

Specs OnePus 6T Galaxy S9
Display 6.41-inches 5.8-inches
Screen resolution 1080 x 2340 pixels 1440 x 2960 pixels
Chipset Snapdragon 845 Snapdragon 845/Exynos 9810
Storage 128,256GB Non-Expandable 64, 128GB Expandable via MicroSD
Rear cameras 16MP+20MP with f/1.7 aperture 12MP with f/1.5 to f/2.4 aperture
Front camera 16MP 8MP
Battery 3,700mAh 3,000mAh
USB Type-C Type-C
3.5mm headphone jack No Yes
IP68 No Yes
OS Android Pie with Oxygen OS Android Oreo 8.0 with Experience UI

The Galaxy S9 still retains the single rear snapper when almost all OEMs have dual rear sensors flagships. Both Apple and Samsung's standard flagships have single rear snapper. Despite being the one sensor, the S9's 12MP rear snapper is pretty awesome and works perfectly in both daylight and low-light scenarios. In stable lightening conditions, the aperture is f/2.4 whereas in low-light conditions the aperture automatically turns to f/2.4. The Galaxy S9 can capture portrait shots despite having single rear snapper. Up front the selfie snapper is 8MP.

The OnePlus 6T comes with dual rear cameras like its predecessor. The primary sensor is a 16MP module with f/1.7 aperture and optical image stabilization whereas the secondary sensor is 20MP with the same aperture but it doesn't have optical image stabilization. On paper, the camera's setup remains same as the OnePlus 6. However, the company brings few new additions including AI support to enhance the 6T's dual rear sensors prowess. The front-facing selfie camera is 16MP with f/2.0 aperture.

In terms of video capturing, the Galaxy S9 is capable to capture 4K videos at 60fps and super-slow motion videos at 960 frames per second. The 6T can capture slow-motion videos at 480fps only which means it still lags behind Galaxy S9. Despite having great dual rear cameras the OnePlus 6T still lags behind the Galaxy S9 in terms of camera capabilities.


The Galaxy S9 is pre-installed with Android Oreo 8.0 with Samsung's custom Experience UI skin over it. It can be rated as one of the best custom skin with few extra goodies. Unfortunately, Samsung's track record in rolling new updates isn't pretty great that's why the device yet not received the latest Android Pie. However, one thing is confirmed it will receive Android Pie as well as Android Q next year.

On the other hand, the OnePlus 6T is running on the Android Pie straight out of the box with OxygenOS layer. The bloatware level is extremely low so if you are stock Android version fan you will definitely like the Oxygen OS. Being on the latest version is always good as opposed to waiting months for the latest version. Another good thing is a OnePlus track record of releasing new updates is pretty good so you can expect timely updates if you own OnePlus 6T.


In the battery section, the OnePlus 6T clearly has an upper hand as it comes with a 3,700mAh battery instead of S9's 3,000mAh cell. Despite having larger display the OnePlus 6T battery will last long. The Full HD+ panel consumes less power as opposed to Quad HD+ panel of S9. The Galaxy S9 comes with QuickCharge 2.0 for fast charging whereas the OnePlus 6T fast charging is way faster and can be rated as amongst the best. Last but not the least the Galaxy S9 has wireless charging support whereas OnePlu 6T lacks it despite having glass rear.

Extra features

Apart from the latest hardware and design, the Galaxy S9 is brought tons of extra goodies to attract buyers. It has dedicated Bixby voice assistant button on the left edge. You can enjoy VR content thanks to Gear VR. The DeX mode brings support for the seamless desktop experience. The AR Emojis is another aspect which is available exclusively on the S9.

The Android Pie straight out of the box brings new gesture-based UI for OnePlus 6T owners. The company adds few more gestures on board to provide you function rich UI. For gamers, the 6T has a dedicated gaming mode which boosts the device to the fullest to provide smooth gaming experience. You can select different display modes at different times, for instance, Night mode to remove the blue light. The Galaxy S9's fingerprint scanner is on the rear side below the camera sensor whereas the 6T comes with an in-glass fingerprint scanner. The company claims the 6T has currently the best-in-class fingerprint scanner.


As far as pricing is a concern the Galaxy S9 base model with 64GB storage starts at $840, however you can purchase it at much lower price tag if you find a good deal. It supports all major networks across the globe. The OnePlus 6T base model with 128GB storage can be purchased t $549. In the US it supports GSM networks as well as AT&T and T-Mobile. The OnePlus 6T isn't widely available whereas Galaxy S9 can be purchased in any region.


The Galaxy S9 and OnePlus 6T are amongst the best in the Android market. Both the devices have pretty striking design language but it's up to you whether you like waterdrop notch or wants to stick with slim bezels. The lack of traditional 3.5mm headphone is a big aspect for you or not. In the display, both have AMOLED panel so you don't have to worry about display quality. By default, the Galaxy S9's display is also on Full HD+. The 6T could take lead in under the hood performance due to special optimization of software. It has decent cameras setup but not as great as the Galaxy S9. Having the latest version of Android is always something which older version users miss, it's definitely a plus point for OnePlus 6T owners.

Last but not the least the 6T comes at the significantly lower price tag as opposed to Galaxy S9. However, if you spend extra bucks you will get IP68 rating phone, better screen resolution, extra AR and VR goodies, 3.5mm headphone jack and support for memory expansion. In the end, we would like to hear our readers thoughts regarding OnePlus 6T vs Galaxy S9 in the comments section below. Stay tuned for more comparisons.

  • The OnePlus 6T isn't still available online. To be notified when it becomse available click here.
  • The Samsung Galaxy S9 isn't still available online. To be notified when it becomse available click here.



OnePlus 6T vs Galaxy S9: How flagships killer competes against Samsung's finest?
Write a comment...

One of the conundrums is to stick with the traditional design or to go for the newer waterdrop notch design. Feeling inclined towards Samsung, but they don't offer that notch.


I can add a couple of more things actually. The more used out of these is the Bixby voice assistant for sure, easing quite a few things on the way. Secondly is the DeX mode. Maybe not all will need that often, but you can't count it out.


After reading the comparison, this is now I got to know why the OnePlus phones are called flagship killers. So much in so little (price-wise).


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