The OnePlus 3 features a new metal back design, similar to that of an HTC M9 or later, with anodised aluminium and curved edges.
The device is available in two colors, Graphite (black/gray) and Soft Gold (white/gold, released later in August 2016.)
Additionally, users can purchase protective covers in Kevlar or black apricot wood, bamboo, rosewood, and sandstone which takes care of the camera hump and evens it with the phone.

The device is slightly smaller than its predecessor, the OnePlus 2.
It's 2.5mm thinner, 0.9mm shorter, and 0.2mm narrower, but still has the same screen size, at 5.5 inches (140 mm) across diagonally.
The display is still 1920×1080 px, comparable to that of the previous two models, but the 3 is the first flagship OnePlus to have an optic AMOLED display.
As is typical for most smartphones, the OnePlus 3 features Corning Gorilla Glass 4 protection.

The OnePlus 3 is also the first OnePlus phone to ship with only 64 GB of storage available, as all other OnePlus devices have shipped with a 16 GB option also.
The onboard storage is UFS 2.0, but there is no option for memory expansion via an SD card.
The OnePlus 3 does include a dual-sim card tray, but fails to have compatibility with LTE band 13, making LTE unavailable to Verizon customers in the United States.


For the rear-facing camera, the OnePlus 3 has a 16 MP f/2.0 Sony IMX 298 sensor, with both optical image stabilisation and electronic image stabilisation.
It is capable of 4K video at 30fps, and 720p slo-mo video at 120fps.
Further, it includes support for shooting RAW images, allowing greater control of the image to the user.
The front camera is an 8 MP f/2.0 Sony IMX179 sensor, with 1080p at 30fps video and fixed focus.

One new feature to the OnePlus 3 is Dash Charge.
It is a custom version of OnePlus' parent company's (OPPO Electronics) VOOC Charging.
The feature is made possible by the processor, which has Quick Charge 3.0 support.
According to the company, the battery can achieve a 60% or more charge within 30 minutes.
This is accomplished by doing all the power transforming required for direct input to the battery in the power brick supplied, not within the phone itself, reducing heat on the device.
Additionally, the power brick can contain larger, dedicated electronics, whereas any power processing on a phone has to use smaller and cooler equipment, reducing the speed of charging.

Other features include the alert slider, originally added to the OnePlus 2.
NFC was added again from the OnePlus One (as it was absent from OnePlus 2).

A fingerprint scanner is also found at the bottom of the screen.
It is estimated to unlock after approximately 0.3 seconds, becoming one of the fastest scanners on a phone.
The scratch resistant property of the scanner is also excellent as it has a ceramic coating to it.
The OnePlus 3 features a new metal back design, similar to that of an HTC M9 or later, with anodised aluminium and curved edges. The device is available in two colors, Graphite (black/gray) and Soft Gold (white/gold, released later in August 2016.) Additionally, users can purchase protective covers in Kevlar or black apricot wood, bamboo, rosewood, and sandstone which takes care of the camera hump and evens it with the phone.
The device is slightly smaller than its predecessor, the OnePlus 2. It's 2.5mm thinner, 0.9mm shorter, and 0.2mm narrower, but still has the same screen size, at 5.5 inches (140 mm) across diagonally. The display is still 1920×1080 px, comparable to that of the previous two models, but the 3 is the first flagship OnePlus to have an optic AMOLED display. As is typical for most smartphones, the OnePlus 3 features Corning Gorilla Glass 4 protection.
The OnePlus 3 is also the first OnePlus phone to ship with only 64 GB of storage available, as all other OnePlus devices have shipped with a 16 GB option also. The onboard storage is UFS 2.0, but there is no option for memory expansion via an SD card. The OnePlus 3 does include a dual-sim card tray, but fails to have compatibility with LTE band 13, making LTE unavailable to Verizon customers in the United States.

For the rear-facing camera, the OnePlus 3 has a 16 MP f/2.0 Sony IMX 298 sensor, with both optical image stabilisation and electronic image stabilisation. It is capable of 4K video at 30fps, and 720p slo-mo video at 120fps. Further, it includes support for shooting RAW images, allowing greater control of the image to the user. The front camera is an 8 MP f/2.0 Sony IMX179 sensor, with 1080p at 30fps video and fixed focus.
One new feature to the OnePlus 3 is Dash Charge. It is a custom version of OnePlus' parent company's (OPPO Electronics) VOOC Charging. The feature is made possible by the processor, which has Quick Charge 3.0 support. According to the company, the battery can achieve a 60% or more charge within 30 minutes. This is accomplished by doing all the power transforming required for direct input to the battery in the power brick supplied, not within the phone itself, reducing heat on the device. Additionally, the power brick can contain larger, dedicated electronics, whereas any power processing on a phone has to use smaller and cooler equipment, reducing the speed of charging.
Other features include the alert slider, originally added to the OnePlus 2. NFC was added again from the OnePlus One (as it was absent from OnePlus 2).
A fingerprint scanner is also found at the bottom of the screen. It is estimated to unlock after approximately 0.3 seconds, becoming one of the fastest scanners on a phone.The scratch resistant property of the scanner is also excellent as it has a ceramic coating to it.
OnePlus 3