When comparing OnePlus 3 vs Honor 8, the Slant community recommends OnePlus 3 for most people. In the question“What are the best dual SIM phones?” OnePlus 3 is ranked 2nd while Honor 8 is ranked 6th. The most important reason people chose OnePlus 3 is:
With a 3000mAh battery, and efficient display as well as processor allow the OnePlus 3 to provide a good battery life. For all but the most demanding users, this phone will last a full day off the charger. Very heavy users may need to top it up for 15 minutes or so, but thanks to rapid charging this will be enough. Running a full HD video for 90 minutes resulted in a 23% battery drop, and the battery has been tested to last up to 8 hours of web browsing or 13 hours of video playback under ideal circumstances.
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Pro All-day battery life
With a 3000mAh battery, and efficient display as well as processor allow the OnePlus 3 to provide a good battery life. For all but the most demanding users, this phone will last a full day off the charger. Very heavy users may need to top it up for 15 minutes or so, but thanks to rapid charging this will be enough.
Running a full HD video for 90 minutes resulted in a 23% battery drop, and the battery has been tested to last up to 8 hours of web browsing or 13 hours of video playback under ideal circumstances.
Pro Super fast app switching
With 6GB of RAM - 50% more than other industry-leading smartphone - the OnePlus 3 will be able to keep tons of apps loaded in memory. This means that apps won't have to re-load often, making the phone feel faster and also saving a bit of battery life (as the apps won't need to re-load which can tax the processor).
Pro Easy notification handling
The OnePlus 3 has a notification slider with 3 positions that toggles between all notifications, priority notifications, and do not disturb mode. This is very handy because you won't need to pull your phone out and turn the screen on to change the alert profiles anymore - you can do it from within your pocket.
Pro Battery charges very quickly
The OnePlus 3 will charge up to 60% in 30 minutes without heating up the phone like Qualcomm's QuickCharge.
Pro Good build quality
Instead of the plastic clad phones of yesteryear, the OnePlus 3 is encased in a metal body this time around. While the design is remarkably similar to the HTC 10 (and HTC One M7 - M9), it feels solid and looks great.
Pro Dual SIM compatible
With 2 SIM slots, users can be more adventurous with their carriers. Whether it be getting a cheaper talk & text plan on one SIM and a data-only tablet plan on the other, or a work SIM and a personal SIM, you have the ability to pick your SIM solution. While this isn't common in North America, many other parts of the world often request this feature.
Pro Customizable software
The OnePlus 3 uses their own Oxygen OS. Oxygen OS provides many custmizable features. For example, just for button options you have the ability to switch from on-screen to off-screen buttons, add a long-touch option, and even the button placement can be configured (back button can be either on the left or right).
Options like these are available for other areas of the phone as well, like the built-in dark theme to take advantage of the Amoled display, and the ability to move the clock in the status bar to the left, center, right, or remove it entirely (useful if you wear a watch).
Pro Great picture quality
No matter the circumstances - very bright, low light, or shaky hands, pictures taken on the OnePlus 3 always seem to turn out alright. While the absolute quality falls short of the top-tier manufactures cameras slightly, the OnePlus 3 is more than competent enough to get the job done in virtually any scenario.
Pro Great fingerprint sensor
The OnePlus 3's fingerprint scanner is both accurate as well as quick to act. It also doesn't click down (it's capacitive), which means that you just need to lightly put your finger on it to be read. As a minor side benefit, one less moving button means less chance of it malfunctioning or wearing out down the line.
Pro Great camera - especially in low light
The Huawei Honor 8 uses a dual-camera setup to gather more details about the picture, and capture the best shot possible. One of the sensors is a 'regular' 12MP camera, while the other is a black-and-white sensor. This is the same camera layout the iPhone 7 uses, and a similar idea to the Galaxy S7 (the S7 uses dual-pixels instead of a duel lens setup). The B & W sensor helps autofocus achieve an accurate focus extremely quick, and also helps lowlight shots substantially.
Pro Excellent performance
Huawei makes their own in-house processors, and the Honor 8 uses one of these HiSilicon Kirin 950. It offers comparable performance to the Snapdragon 820 found in 2016's best phones - the LG G5, HTC 10, Galaxy S7, OnePlus 3 and others. There is also 4GB of RAM which keeps many apps loaded at once allowing for quick multitasking, furthermore making the phone feel exceptionally quick.
Pro Amazing fingerprint scanner
The Honor 8 is made by Huawei - the same manufacturer that made the Nexus 6P from 2015, which was partially known for it's amazing fingerprint scanner. They're repeated this success in the Honor 8. You can place your finger on the scanner when the display is off, and in a matter of milliseconds the phone will be unlocked (no need to press any buttons or wake the phone prior).
The scanner is also located at a very convenient location - along the middle axis about 3/4 the way up the back of the phone. This is where your index finger usually rests when holding the phone, which means when you reach into your pocket to pick up your phone it will be unlocked by the time you get a chance to look at the screen without the need to re-adjust your grip. The downside is that you can't unlock it using the fingerprint scanner while it lays flat on a table or desk.
Pro Can be used as a universal remote control
Thanks to the addition of a hardware IR blaster located on the top of the phone, you can control your TV as well as other supported appliances (fans, air conditioners, etc) that use remote controls. This adds a lot of convenience, even if it isn't a headlining feature.
Con Limited American carrier support
The OnePlus 3 won't work on Verizon or Sprint (but will work on T-Mobile, AT&T, and most GSM carriers world-wide).
Con Slightly blocky text when viewing it up close
The OnePlus 3 uses the Pentile submatrix for pixels, which makes the resolution not appear as crisp as it should be (compared to another 5.5" 1080p display it will look more pixelated). While not a big issue for most, some will be able to recognize the difference in sharpness when compared to other 1080p displays, and especially 1440p displays which are becoming common.
Con Poor VR experience
The display has 1080p resolution which will look good on its own, however will look very grainy if used with VR (virtual reality). This is significant, because OnePlus has released the Loop VR.
Con Shaky video capture
Even with OIS, videos come out with constant minor shakes. While panning these skakes are less noticeable.
Con Slow official updates
OnePlus has traditionally been very slow to update their phones to new Android versions - considerably slower than the major manufacturers.
Con Poor speaker quality
The speaker isn't anything to write home about. It doesn't provide a full range of sound, nor does it get very loud.
Con Sub-par software
The software can be a bit frustrating at times. There's a lot of bloatware, and Huawei has tinkered with Android's scrolling speed to make it slower. It also won't allow you to click at all until the scrolling has completely stopped. The theme looks a bit like iOS, and it also lacks an app drawer.