OnePlus 6 review

A notched iteration of Optic AMOLED

The OnePlus 6 has a 6.28-inch display of a 19:9 aspect ratio that accommodates a notch up top. The resolution is 1,080 x 2,280px and that makes for a 402ppi pixel density. It's an AMOLED panel, which OnePlus likes to call Optic to differentiate it from others on the market. Plus, you can't spell Optic without OP.

In our testing, the OnePlus 6 posted a maximum brightness of 456nits, a small bump over the 5 and 5T. Just like them, there's no brightness boost when in auto mode. The Galaxy S9+ is a lot brighter with auto enabled, but is dimmer when you're moving the slider yourself. Even the far from perfect LG V30 screen can push out upwards of 600nits in auto mode. The Huawei P20 Pro's non-Optic AMOLED can also go above 600nits. The Pixel 2 XL, on the other hand, is behind the OnePlus 6 in maximum brightness and has no auto boost either.

In our sunlight simulation test, the OnePlus 6 posted a lower score than the OP5T, but then the 5T has the second-best result in the modern era. Despite the drop, the OP6's contrast under direct light is still excellent, almost Galaxy S9+ excellent, and better than the likes of Huawei P20 Pro, LG V30, and Nokia 8 Sirocco.

Sunlight contrast ratio

• Apple iPhone X
  5.013
• OnePlus 5T
  4.789
• Samsung Galaxy S8
  4.768
• Samsung Galaxy S8+
  4.658
• Samsung Galaxy S9
  4.63
• Samsung Galaxy S6 edge+
  4.615
• Samsung Galaxy S9+
  4.537
• Motorola Moto Z2 Play
  4.459
• Oppo R11
  4.454
• Samsung Galaxy S7 edge
  4.439
• OnePlus 3
  4.424
• Samsung Galaxy S7
  4.376
• OnePlus 6
  4.321
• HTC One A9
  4.274
• Oppo R15 Pro
  4.251
• Samsung Galaxy Note7
  4.247
• Samsung Galaxy A3
  4.241
• Nokia 8
  4.239
• Google Pixel 2 XL
  4.234
• OnePlus 3T
  4.232
• Google Pixel XL
  4.164
• ZTE Axon 7
  4.154
• Samsung Galaxy Note8
  4.148
• Meizu Pro 7 Plus
  4.147
• Samsung Galaxy A7 (2017)
  4.124
• Samsung Galaxy S6 edge
  4.124
• Huawei Mate 10 Pro (normal)
  4.096
• Samsung Galaxy Note5
  4.09
• Huawei P20 Pro
  4.087
• Nokia 6 (2018)
  4.052
• Google Pixel 2 (pre-update)
  4.023
• LG V30
  4.022
• Huawei Nexus 6P
  4.019
• Samsung Galaxy J7 Pro
  3.998
• Vivo Xplay5 Elite
  3.983
• OnePlus X
  3.983
• Oppo R7s
  3.964
• Apple iPhone 7
  3.964
• Apple iPhone 8 (True Tone)
  3.957
• Huawei P9 Plus
  3.956
• Meizu Pro 6 Plus
  3.935
• Lenovo Moto Z
  3.931
• Samsung Galaxy A7 (2016)
  3.918
• OnePlus 5
  3.914
• Samsung Galaxy C5
  3.911
• Samsung Galaxy C7
  3.896
• Samsung Galaxy A5
  3.895
• Samsung Galaxy J7 outdoor
  3.879
• Samsung Galaxy J2 outdoor
  3.873
• Motorola Moto G6 Plus
  3.865
• Samsung Galaxy A8
  3.859
• Samsung Galaxy A8 (2018)
  3.842
• Sony Xperia XZs
  3.818
• Samsung Galaxy A9 (2016)
  3.817
• Motorola Moto X (2014)
  3.816
• Samsung Galaxy J7 (2017)
  3.812
• Samsung Galaxy A5 (2017)
  3.804
• Samsung Galaxy J7 (2016) outdoor mode
  3.802
• Xiaomi Redmi Pro
  3.798
• LG V20 Max auto
  3.798
• Sony Xperia XZ
  3.795
• Samsung Galaxy A5 (2016)
  3.789
• Apple iPhone 6s
  3.783
• Meizu Pro 5
  3.781
• Microsoft Lumia 650
  3.772
• Xiaomi Mi 6
  3.767
• Sony Xperia XZ1
  3.765
• Samsung Galaxy J7 (2016)
  3.756
• Nokia 8 Sirocco
  3.745
• Sony Xperia XZ1 Compact
  3.729
• Apple iPhone 8 Plus (True Tone)
  3.725
• Oppo F1 Plus
  3.709
• Vivo X5Pro
  3.706
• Samsung Galaxy A3 (2017)
  3.688
• Huawei P20
  3.683
• Apple iPhone SE
  3.681
• Huawei Mate 9
  3.68
• Samsung Galaxy A7
  3.679
• Sony Xperia XZ2 Compact
  3.675
• Meizu PRO 6
  3.659
• BlackBerry Priv
  3.645
• Sony Xperia XA1 Ultra
  3.597
• Apple iPhone 7 Plus
  3.588
• Sony Xperia XZ2
  3.58
• LG G6
  3.556
• Apple iPhone 6s Plus
  3.53
• Motorola Moto Z Play
  3.526
• Samsung Galaxy J3 (2016)
  3.523
• Samsung Galaxy J3 (2016) outdoor mode
  3.523
• Acer Jade Primo
  3.521
• Microsoft Lumia 950
  3.512
• Oppo R7 Plus
  3.499
• Nokia 7 plus
  3.479
• nubia Z11
  3.466
• Huawei P10 Plus
  3.456
• HTC U Ultra
  3.453
• Motorola Moto G6
  3.448
• Sony Xperia XA2 Ultra
  3.445
• Samsung Galaxy J7
  3.422
• Motorola Moto G6 Play
  3.419
• Meizu MX5
  3.416
• LG V20
  3.402
• Xiaomi Redmi Note 5 AI Dual Camera
  3.393
• Huawei P10
  3.379
• Samsung Galaxy J5 (2016)
  3.378
• Oppo R9s
  3.352
• Honor 8 Pro
  3.341
• Oppo F7
  3.333
• Oppo R7
  3.32
• Lenovo P2
  3.316
• Archos Diamond Omega
  3.305
• Honor 9
  3.289
• Xiaomi Mi 5s
  3.276
• Nokia 5
  3.261
• Nokia 6 (Chinese version)
  3.244
• Nokia 6 (Global version)
  3.238
• Samsung Galaxy J2
  3.235
• Sony Xperia X Performance
  3.234
• Xiaomi Mi Note 2
  3.228
• Motorola Moto X Play
  3.222
• Oppo F3 Plus
  3.218
• Huawei Mate 9 Pro
  3.206
• Huawei P9
  3.195
• Xiaomi Mi Mix 2
  3.19
• ZTE Nubia Z17
  3.159
• Oppo R11s
  3.153
• Lenovo Vibe Shot
  3.113
• HTC U11 Life
  3.108
• Motorola Moto X Force
  3.105
• LG Nexus 5X
  3.092
• HTC U11
  3.089
• Huawei Mate S
  3.073
• Microsoft Lumia 640 XL
  3.065
• Apple iPhone 6 Plus
  3.023
• Asus Zenfone 4 ZE554KL
  3.019
• Motorola Moto X4
  3.012
• Sony Xperia XA1
  3.012
• Sony Xperia L1
  2.994
• Sony Xperia X
  2.989
• LG Q6
  2.987
• Huawei P10 Lite
  2.974
• Samsung Galaxy Note
  2.97
• Huawei P20 Lite
  2.952
• Xiaomi Redmi 5
  2.951
• Huawei Mate 8
  2.949
• Sony Xperia XA2
  2.938
• Oppo Realme 1
  2.932
• Xiaomi Redmi 4
  2.92
• Xiaomi Redmi 5 Plus
  2.913
• Xiaomi Redmi 3S
  2.913
• Sony Xperia XA Ultra
  2.906
• LG G5
  2.905
• Huawei Honor View 10
  2.896
• Xiaomi Redmi 3s Prime
  2.893
• Xiaomi Mi 5s Plus
  2.884
• Sony Xperia XZ Premium (sRGB)
  2.877
• Sony Xperia XZ Premium
  2.877
• Sony Xperia Z5
  2.876
• Nokia 3
  2.871
• Microsoft Lumia 550
  2.851
• Lenovo Moto M
  2.813
• Xiaomi Redmi 3 Pro
  2.803
• Sony Xperia Z5 compact
  2.784
• Honor 10 (Vivid)
  2.757
• Nokia 2
  2.752
• Meizu MX6
  2.751
• LG V10
  2.744
• Huawei Mate 10 (normal)
  2.742
• Motorola Moto G5S Plus
  2.737
• Xiaomi Redmi 3
  2.735
• Huawei Honor 7X
  2.734
• Xiaomi Redmi Note 4 (S625)
  2.714
• Meizu M5
  2.71
• Sony Xperia M5
  2.69
• Xiaomi Mi A1
  2.689
• Huawei P9 Lite
  2.679
• Xiaomi Redmi 4 Prime
  2.679
• vivo V7+
  2.671
• Vivo V3Max
  2.659
• Xiaomi Mi Mix
  2.658
• Huawei Mate 10 Lite
  2.654
• Oppo F5
  2.653
• Doogee Mix
  2.642
• Xiaomi Mi 4i
  2.641
• Xiaomi Redmi 4a
  2.635
• Xiaomi Mi 5X (Standard)
  2.616
• Sony Xperia XA
  2.609
• Motorola Moto G4 Plus
  2.582
• Motorola Moto G4 Plus (max auto)
  2.582
• Meizu M5s
  2.58
• Xiaomi Mi 4c
  2.574
• LeEco Le Max 2
  2.567
• Asus Zenfone 3 ZE552KL
  2.563
• Microsoft Lumia 640
  2.563
• Huawei P Smart
  2.563
• Xiaomi Mi Max 2
  2.561
• HTC U11+
  2.556
• Xiaomi Redmi Note 5A (Y1)
  2.556
• Lenovo K6 Note
  2.544
• Lenovo Moto G4
  2.544
• Oppo F1
  2.528
• Sony Xperia Z5 Premium
  2.525
• Huawei Honor 7 Lite / Honor 5c
  2.506
• Sony Xperia M4 Aqua
  2.503
• BlackBerry Motion
  2.494
• Oppo F1s
  2.481
• Motorola Moto G
  2.477
• Lenovo Vibe K5 Plus
  2.473
• Huawei G8
  2.471
• Huawei nova
  2.467
• Sony Xperia Z
  2.462
• Lenovo Vibe K5
  2.459
• Meizu m3 max
  2.447
• Xiaomi Mi 4
  2.424
• Xiaomi Mi 5X (Auto)
  2.417
• HTC 10 evo
  2.407
• Huawei Honor 7
  2.406
• Vivo V7
  2.404
• Sony Xperia E5
  2.386
• ZUK Z1 by Lenovo
  2.382
• HTC 10
  2.378
• Oppo F3
  2.376
• vivo V5 Plus
  2.371
• Meizu m1 note
  2.362
• Huawei nova plus
  2.329
• Razer Phone
  2.328
• HTC One E9+
  2.305
• Alcatel One Touch Hero
  2.272
• Sony Xperia L2
  2.266
• Lenovo Vibe K4 Note
  2.254
• HTC U11+ (EU)
  2.253
• Sony Xperia C5 Ultra
  2.253
• Xiaomi Redmi Note 3 (MediaTek)
  2.249
• Sony Xperia C4 Dual
  2.235
• Xiaomi Mi Note
  2.234
• Motorola Moto G (2014)
  2.233
• LG Nexus 5
  2.228
• Huawei P8
  2.196
• Meizu M5 Note
  2.189
• Huawei Honor 6
  2.169
• Xiaomi Redmi Note 2
  2.166
• OnePlus Two
  2.165
• HTC One X
  2.158
• Xiaomi Redmi Note 4 (X20)
  2.145
• LG Aka
  2.145
• Archos 50 Diamond
  2.134
• Xiaomi Redmi Note
  2.119
• Xiaomi Mi 4S
  2.095
• Acer Liquid X2
  2.084
• Huawei P8lite
  2.078
• vivo V5
  2.059
• Moto G 3rd gen max manual
  2.026
• Xiaomi Mi 3
  2.001
• Xiaomi Mi Max
  1.996
• Sony Xperia E4g
  1.972
• OnePlus One
  1.961
• Sony Xperia Z2
  1.944
• Meizu m3 note
  1.923
• Meizu m2 note
  1.892
• BlackBerry Leap
  1.892
• HTC Butterfly
  1.873
• ZTE Nubia Z9 mini
  1.759
• Sony Xperia U
  1.758
• Asus Zenfone Selfie
  1.68
• Motorola Moto E (2nd Gen)
  1.675
• ZTE Nubia Z9
  1.659
• Jolla Jolla
  1.605
• Motorola Moto E
  1.545
• Sony Xperia M
  1.473
• Sony Xperia L
  1.351
• Xiaomi Redmi 2
  1.311
• HTC Desire C
  1.3
• Nokia X
  1.291
• Meizu MX
  1.221
• Sony Xperia E
  1.215

When it comes to colors, with the OP6 you can have your cake and eat it too. The Default mode (that's what it's called) has a noticeable bluish tint to the whites, plenty of punch and colors all over the place (average DeltaE of 6.3). There are also sRGB and DCI-P3 modes, however, which are both very accurate to their respective targets (average DeltaE of 2.3 and 2.1).

Audio quality

The OnePlus 6 had loudness well above average in our external amplifier test and a flawlessly accurate output leaving us with nothing much to comment here.

Plugging in a pair of headphones did a moderate amount of damage to the stereo crosstalk and degraded the volume to average. It's still a respectable performance though and one that will leave few people disappointed.

OnePlus 6 frequency response

You can learn more about the tested parameters and the whole testing process here.

OnePlus 6 battery life

The OnePlus 6 uses the same capacity battery as the two 5s before it - 3,300mAh. The display grew a little from the 5 to the 5T, and now there's an extra few pixels to light up so it's no wonder that we're seeing a downward trend in battery life.

In our testing, we measured fourteen and a half hours of looping videos offline - an excellent result on its own, yet about two and a half hours short of the 5T's number, itself down about two hours from what the OnePlus 5 posted.

Similarly, in our Wi-Fi web browsing test, we recorded 9:19h for the OP6, 10:09h for the OP5T, and 10:54h for the OP5. And then comes the reverse trend in voice calls, where the OP6 calls it quits after about 28 hours of yada-yada vs. the 22:28h of the OP5T and 19:27 of the OP5.

Overall, the OnePlus 6 scored a 76h Endurance rating in our four-pronged test (a reminder that we also measure standby, that's not featured on the scorecard).

Our endurance rating denotes how long a single battery charge will last you if you use the OnePlus 6 for an hour each of telephony, web browsing, and video playback daily. We've established this usage pattern so our battery results are comparable across devices in the most common day-to-day tasks. The battery testing procedure is described in detail in case you're interested in the nitty-gritties. You can also check out our complete battery test table, where you can see how all of the smartphones we've tested will compare under your own typical use.

OnePlus' Dash charge tech is really life-altering, and we've heard of folks who have entirely abandoned overnight charging once they got their OPs. It's understandable - a full charge from flat takes 1:15h on the OnePlus 6, while 30 minutes into it, a flat battery is already at 60%.

The one downside is that Dash uses a proprietary cable and charger and you need both of these for it to work.

Loudspeaker

The OnePlus 6 has a single loudspeaker, a down-firing one. It's not very loud either, though it does fall in the 'Good' category, as our testing methodology goes - it's just we've been spoiled recently by mostly 'Excellent' loudness. The OnePlus 6 is a little boomier than most when it comes to the low end of the spectrum, which is nice.