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Update: The OnePlus Open finally started receiving Android 14 in the US in March 2024.
It took OnePlus a few years to put out its first foldable, but it seems like it might be the best foldable on the market. The OnePlus Open is doing many things that the Samsung Galaxy Z Fold 5 does not do. This includes offering double the storage, more than double the charging speed, a larger battery, much brighter displays, and a usable front display.
Sure, some might argue that this is not OnePlus’ first foldable because they are the same company as OPPO, which has released several foldables already, which is fine since the OPPO Find N3 is the same phone as the OnePlus Open, just with an OPPO logo and a few more color options. But OnePlus has really hit the foldable out of the park with the Open. Though I’m still not completely sold on the name here. It’s different, seeing as everyone else is using “Fold” in their name. But it still seems a bit odd.
Let’s find out if the OnePlus Open is the right foldable for you in our full review.
OnePlus Open Review: Hardware and Design
OnePlus and OPPO have always built really well-made smartphones, and with the Open, you can see even more of that OPPO pedigree in the hardware and design. On the back, OnePlus has included a large camera bump that looks similar to its other smartphones. So you can see that OnePlus design here on the Open. This camera bump does include three flagship-level cameras, which is quite impressive, and we’ll touch on that more in the camera section of this review.
But the camera bump does serve an excellent purpose. And that’s making it easier to hold onto. I sometimes use the camera bump to hold onto the phone when using it in the landscape to watch a video or something like that. It does make it pretty easy to hold onto, especially since the bezels on the OnePlus Open are pretty small already. It also makes it easier to hold onto when the phone is closed since you can rest your finger below the camera instead of holding the entire phone on your pinky. That poor pinky. It’s a small thing but it’s pretty genius in the design of the OnePlus Open.
The back of our unit is a black vegan leather back, which is really nice to have. It makes it super grippy, and less likely to be dropped. It does come with a case in the box, but I’ve rarely used it, to be honest. It is a decent case, but the vegan leather back means it’s not really needed at least in my opinion. If I were spending $1,700 on this phone, I’d definitely be using the case, or even buying another case for this phone. Make sure it’s nice and protected.
The frame here feels really high-end too. It’s made of Titanium Alloy, Carbon Fiber, and a few other materials that make it strong without making it heavier. In fact, the OnePlus Open is super lightweight. It weighs 239g. That doesn’t sound light for a phone, but here are a few competitors’ weights: iPhone 15 Pro Max at 221g, Samsung Galaxy Z Fold 5 at 253g, and Google Pixel Fold at 283g. That’s rather impressive, and it’s only heavier than the iPhone 15 Pro Max because Apple went with Titanium this year instead of sticking with Stainless Steel.
OnePlus has brought back the Alert Slider, which is always a crowd-favorite for OnePlus and now OPPO fans. It’s on the right side of the phone when opened, with the volume slider above the power button on the left side. So when it is closed, the Alert Slider is above the volume rocker. There’s loads of tactile feedback with the Alert Slider on the OnePlus Open, too, making it very satisfying to switch up.
On the front of the phone, there’s a pretty small 6.31-inch 18:9 aspect ratio display. This smaller display makes the Open great for putting into your pocket without taking up too much space. It does have rounded corners like most displays, and you can see the frame around it, which I think looks really nice in this Voyager Black color, to be quite honest.
The hardware here reminds me of something Motorola would make. It’s an industrial design that is also stunning. And honestly, since I received the OnePlus Open almost a month ago, it’s been tough to put it down. It’s such a great-feeling phone, and it looks incredible, too. And I just love everything about it. In fact, I’ve been using it so much that many of the pictures in my most recent reviews came from the OnePlus Open, instead of the iPhone 15 Pro Max.
The hinge
The hinge here on the OnePlus Open is really impressive. OnePlus reduced the number of parts required for the hinge from over 100, to about 69 (nice). This means a thinner hinge and a more durable hinge. OnePlus says the hinge has been certified for reliable folding by an international certification institute for over 1 million folds. That comes out to about 100 folds per day over 10 years. Now, obviously, there’s no way that we could have tested that out, in just a month. But even at 100 folds a day, that seems excessive, so this hinge should definitely last the phone’s life.
Another aspect of the hinge that shocked me is, when you open it, it almost springs open. You can still use it in tent mode or at a 90-degree angle, but when you go past 90 degrees, it kind of springs open to 180 degrees. And yes, it does open completely flat, unlike the Pixel Fold, which opens to about 178 or 179 degrees. That’s something I have to look at now with every foldable, since the Pixel Fold.
OnePlus Open Review: Displays
Both displays on the OnePlus Open are the best displays I’ve ever seen on a foldable. Why is that? Well, for one, they are crazy bright. There was a lot of talk about the Google Pixel 8 Pro sporting a 2400nit peak brightness display. And well, OnePlus has surpassed it – on a foldable. Both of these displays have 2800nit peak brightness. It is making them super bright and a joy to use outside in direct sunlight. This is really impressive on a foldable because the folded screen is made of plastic, with an ultra-thin layer of glass. Plastic is naturally very reflective. Making it hard to use in direct sunlight – the Pixel Fold was almost unusable outdoors.
The front display has a weird aspect ratio, around 20:9, with a resolution of 2482×1116 pixels. That gives it 431 pixels per inch, and almost a regular smartphone aspect ratio. For example, the recently released Pixel 8 Pro is a 20:9 aspect ratio. So because of this, using the front display becomes very natural, because it’s the same as a non-folding smartphone. Unlike the likes of the Galaxy Z Fold 5, which has a very skinny and tall front display. They are making it harder to use.
That display is also a dynamic refresh rate display, able to go from 10Hz to 120Hz. Making it suitable for using Always-On Display and conserving battery life as well.
OnePlus Open’s main display is stunning
Now let’s talk about that main display. It’s still basically a square display, like most book-style foldables. It has an aspect ratio of 1.0758:1. It also sports a nearly 2K resolution at 2440×2268, which gives you 426 pixels per inch. It also has up to 2800 nits of peak brightness or 1400 nits of typical brightness. This is an LTPO display able to move dynamically from 1Hz to 120Hz.
OnePlus did not outfit the Open with huge bezels like the Pixel Fold (though I do not really care that those bezels are so large, they make it easy to hold onto). Instead, they are pretty thin and look really good, actually, here. But the main thing with this main display is the crease. You might say, “What crease?”. Exactly. OPPO has been working hard on recent foldables to basically get rid of the case. It was still very slightly noticeable on the OPPO Find N3 Flip that I recently reviewed. But on the OnePlus Open, I really only see it when looking for it. It’s more of a feeling than seeing the crease here. This is after using the phone for a month, meaning that it has been opened and closed many times, breaking in that crease. It’s honestly very impressive what OnePlus has managed to do here.
This is why this is the best display I’ve seen on a foldable so far. It’s very bright, has very little crease, and is still able to go from 1Hz to 120Hz. OnePlus really went all out here. And as they told us in our briefing last month, the Open does have “Over-the-top” specs.
The only real complaint I have here is that the longer side is on the y-axis, instead of the x-axis like the Find N2 and Pixel Fold, which meant that you’d get tablet apps without rotating the phone. But with the Open, to get the tablet version of, say, Gmail, you do need to rotate the phone. It’s honestly not a big deal, but it is something to think about.
OnePlus Open Review: Performance
This is the part that everyone’s waiting on. The performance of OnePlus’ first foldable. And to keep it short, it’s very good. And exactly what you would expect from OnePlus.
Of course, that is very much expected here when you look at the spec sheet. That includes the Qualcomm Snapdragon 8 Gen 2 processor, 16GB of RAM, and 512GB of storage. That’s more RAM than Samsung’s foldables, double the storage, and the same price. It makes me wonder why you would buy the Galaxy Z Fold 5 over the OnePlus Open.
We’ve tested loads of phones running on the Snapdragon 8 Gen 2, so the performance here is unsurprising. It’s a great chip with really good battery efficiency. And that continues to be true here on the OnePlus Open. Adding in that extra RAM and storage makes this a pretty beastly foldable.
As mentioned before, I’ve been using this phone off and on for about a month at this point. So that’s plenty of time to test out the performance of the Open, and it’s honestly incredible. I have not once gotten it to get hot at all. It does get a little bit warm when you use the camera for a long time, or do some long gaming sessions, but not uncomfortably hot.
Face Unlock and Fingerprint
Like most newer Android phones, the OnePlus Open does include both Face Unlock as well as a Fingerprint option. The fingerprint sensor is located in the power button, as it is on every foldable – because you don’t want to press down too hard on that main display. And I still believe this is the perfect spot for a fingerprint sensor. It’s fast, and it’s where you’re already pressing to turn on the phone.
Then there’s Face Unlock, which isn’t as strong as a fingerprint, but it works and is fast. Honestly, I had it on for a few days and then turned it off, as I was just using the fingerprint option all the time.
Speakers sound magnificent
OnePlus has outfitted the Open with a triple spatial speaker setup and has Dolby Atmos included. So that means it should sound pretty incredible, right? Right. OnePlus says that these speakers work in tandem with a proprietary spatial audio algorithm to take Dolby Atmos content to the next level. It also allows for three-dimensional sound that comes to users from all directions.
Basically, what this means is that you can use the speakers on the OnePlus Open to watch videos and even listen to music without your earbuds. I’ve been watching videos from YouTube, Peacock, Prime Video, and more on the Open for the past few weeks, and it’s been a really incredible experience, to be quite honest. These are honestly some of the best speakers I’ve heard on a foldable. This is unique since foldable generally use as much space as possible for the battery while also trying to be super thin. OnePlus was able to add in some pretty powerful speakers and a larger battery and make the Open thinner than most foldables – except for the Honor Magic V2 and VS2.
Benchmarks
On every smartphone that comes across our desk, we run a series of benchmarks. While we do believe that benchmarks don’t really matter in the grand scheme of things, it is the best way to compare phones. Given that there are so many variables with these phones, this is the best way to compare them with as few variables as possible.
So with the OnePlus Open, we’ve run Geekbench 6, 3D Mark Wildlife Extreme Stress Test, and PC Mark. We’ve also run a couple of other tests we’ll get to in a moment.
Starting off with Geekbench 6, the OnePlus Open scored 1,089 in the single-core test and 4,098 in the multi-core test. While the GPU test was 8,424. Now when we compare that to other Snapdragon 8 Gen 2 devices, like the Sony Xperia 1 V and Samsung’s Galaxy Tab S9 Ultra, we see that the the speeds are pretty comparable. However, the single-core result is a bit lower than basically every other phone we’ve tested this year, which is a bit concerning. But the other speeds are pretty similar. Why could it be different? Well, there’s a number of reasons. But the biggest reason would be software optimization. Now when comparing to Samsung’s products, remember that they use a slightly overclocked version of the Snapdragon 8 Gen 2 processor. So their results will definitely be higher.
The next test that we ran here was PCMark Work 3.0. Now this test simulates using your phone for work things, like spreadsheets and so forth. On this one, the higher the score, the better. And the OnePlus Open actually scored lower than everyone else. That is somewhat surprising, given that the Pixel 8 Pro and Pixel Fold use Tensor chipsets, which we know are underpowered.
With the OnePlus Open, we also ran the 3D Mark Wildlife Extreme Stress Test. This does 20 rounds of the benchmark on the phone, taking about 20 minutes. It will give us a good idea of sustained performance compared to the competition. On the OnePlus Open, we got the best loop score of 3,712, the lowest loop score of 2,450, and the stability was 66%. The loop scores are pretty good and better than most other phones we’ve benchmarked. However, the stability is the worst. Stability was at 66%, while most other phones are above 75%, with almost all of them being around 82%. So a sustained workload is not something the OnePlus Open can handle, it appears.
Our final test is one that we’ve put together here at Android Headlines. Essentially, we are timing how long it takes to export a one-minute video in Capcut. We’ve done this same test on many Android phones (and the iPhone 15), with varying results actually, as you can see in the graph above.
The OnePlus Open had a time of 16.03 seconds. That is the second fastest among Android devices – only the Galaxy Tab S9 Ultra beat it out, with 7.21 seconds. But again, it uses an overclocked Snapdragon 8 Gen 2, so it should outperform it. This is a pretty relevant test, as Capcut is the number one video editing app for short-form content on TikTok, Instagram and YouTube. So this is a really good indication of how fast a phone can actually perform.
OnePlus Open Review: Battery life and Charging
OnePlus can’t claim that it has the largest battery in a book-style foldable, unfortunately since the Google Pixel Fold is a tiny bit larger. But OnePlus was able to cram a 4,805mAh battery inside this pretty thin foldable. And paired with the Snapdragon 8 Gen 2 processor, this thing sips on battery.
Most of the time, I unplugged the OnePlus Open around 7 am and used it throughout the day before putting it back on the charger around 11 PM. And it often times had over 6 hours of screen on time, and about 30% left. On heavy days, I was able to push it to 10 hours of screen time. Now, that is right on par with the OnePlus 11 when I tested it earlier this year. So in my experience, this also has the best battery life on a foldable, so far. Not night and day better than the Galaxy Z Fold 5, but this is one of those phones that can last me a solid two days, depending on the usage.
Charging is also a bright spot for the Open. And that’s for two reasons. One, the charger is included in the box. Two, it’s 67W SUPERVOOC charging, even though the charger is 80W. This charging means that it can fully charge the OnePlus Open in about 40 minutes or so. You won’t need to top-up the phone, but when you do need to, the Open is excellent for it.
The only downside is that there’s no wireless charging on the OnePlus Open. The company stated that users wanted a bigger battery and faster wired charging over offering wireless charging. Which I can get, and the faster charging is excellent to have here. But wireless charging is just so convenient. OnePlus does tend to flip-flop on its stance on wireless charging. They are keeping it in some of its flagships and removing it in others to lower the price. The good thing here is that the charger is available in the box.
Battery and Charging testing
We’ve done battery rundown and charging testing on the OnePlus Open, and the news is pretty good.
What we’ve done here is take a video on YouTube and play it on the phone from 100% all the way down to 0% – sometimes a bit sooner so we get an accurate number. The phone runs the video with the sound on and brightness up. We use these same testing procedures on each phone, and the results are below.
As you can see, the OnePlus Open did best with the other Android phones we’ve tested, but it did not beat out the iPhone 15 Pro Max – which has the battery life crown as of right now. The OnePlus Open finished with a time of 15:32. That is quite good, still. In fact, anything over fifteen hours would land as our pick for the best battery-life smartphone. It’s about two hours better than the Pixel Fold, and a little more than an hour better than the Pixel 8 Pro. However, the iPhone 15 Pro Max did run away with it here, which leads me to believe that Apple has done some incredible video-stream optimization.
Now onto charging. It should come as no surprise that OnePlus has completely dominated the space so far. In our testing, we were able to go from dead to 100% in 42:30. That’s a bit longer than what OnePlus claims about 40 minutes here. And depending on a number of variables that we cannot control, you might get slower or faster charging. This is still, more than twice as fast as the other phones we’ve tested.
For this test, we use the included charging brick and cable (if applicable) and time the phone’s charging. For the OnePlus Open, we used the included SuperVOOC charger, which is an 80W brick capable of 65W here in the US. And let it charge.
OnePlus Open Review: Software
Before we jump into the software on the OnePlus Open, let’s talk about how many updates this will get. OnePlus is promising 4 years of OS updates and five years of security updates. That’s pretty good and stays with the competition – except for the new Pixel 8 series, which offers seven years. It’s pretty good, and I doubt many will still be using their OnePlus Open after 4 or 5 years. Most people buying this phone are early adopters. So good job, OnePlus.
The OnePlus Open is launching with Android 13 and OxygenOS 13.2. It should be getting Android 14 and OxygenOS 14 before the end of the year. So, a lot of the main features of this phone are the same as the OnePlus 11. But there are quite a few great features here that help make that larger display much easier to use.
OnePlus claims that the Open is the perfect choice for entertainment, and they aren’t wrong. Why? Because you can run three apps on the main display at the same time. You can have a YouTube video playing across the top or bottom, or even in Picture-in-Picture, with two other apps open. So, while watching your favorite YouTuber, you can also be on X/Twitter seeing what’s going on.
This is part of the Open Canvas feature that OnePlus built for the Open. It was built from the ground up, and about 95% of apps are compatible with the extended display without putting it into a weird resizing. You can stretch and resize the apps to fit on the screen however you want. You can also push apps off the screen or use a floating window. It takes multi-tasking to the next level. You can also save these app combos so you can quickly jump back into these apps. OnePlus lets you save up to nine app combos.
OnePlus also has the desktop-like Taskbar that Google added to foldables with the Android 12L update a couple of years ago. But OnePlus has made it even better. OnePlus has added a button to the left side that will open the app drawer, making it quicker to jump into apps. There is also a button for the file manager. This file manager has three tabs for images, documents and others. So, say you are typing up an email in Gmail and need to attach a photo, just tap on the file manager, and then you can drag-and-drop a photo into that email or a document to attach to that email. It’s not something I have used a lot, but the few times I have used, it’s been really nice to have.
The Taskbar also adds three of your most recently used apps to the right side of the dock, which makes for switching apps a whole lot faster. And so you’ll never have to go to the home screen.
OnePlus also allows users to adjust the display size of apps on a per-app basis. This is actually a feature that Google just added to the Pixel Fold on the Android 14 QPR 1 Beta. So it’s good to see that OnePlus is ahead of things here. You can choose full screen, 16:9 or 4:3 for the size. This is great for apps like Instagram, however now that Instagram’s foldable layout has rolled out to other foldables, it’s not needed as much. Basically, all it has done is move the bottom bar to the side. But it is a big change that makes it a lot easier to use.
OxygenOS also runs very smoothly on the OnePlus Open, which is great to see. It should be expected with the hardware that’s here, but it is good to see. During my time with it, I have not seen the OnePlus Open slow down at all. I have seen some force closing of apps, but I’ve chopped that up to the apps being beta versions – like Instagram and X. Which was actually fixed after a day, so I’m 100% sure that this was an issue in the beta version of Instagram and the beta version of X.
Android 14
On March 11, 2024, OnePlus started to push out Android 14 to the Open. This also brings Oxygen OS 14, in build CPH2551_14.0.0.501(EX01). It weighs in at about 2.54GB and does bring along some pretty nice changes to the phone.
Some of what was added in the Oxygen OS 14 update includes Aqua Dynamics. This debuted on the OnePlus 12 earlier this year. It effectively allows you to have a new way of interacting with morphing forms that allow you to view up-to-date information at a glance.
OnePlus also added “File Dock,” which allows you to use drag and drop action to transfer files between apps and devices. OnePlus also improved the Shelf with more widget recommendations, and security has been improved, too.
OnePlus Open Review: Camera
Honestly, this is my favorite part of this phone. The cameras on this phone are incredible. There’s a triple camera setup here on the Open, which includes the new Sony LYT-T808 “Pixel Stacked” sensor as the main sensor. This is a rather unique sensor, and it’s fairly new from Sony. But it stacks pixels, so it can bring in more light in less space, giving what OnePlus says is “almost 1-inch sensor” results. This is a 48-megapixel sensor with a f/1.7 aperture, and the pixels themselves are 1.12um, which is quite large. This is a 24mm equivalent lens.
On the telephoto, OnePlus is using an OmniVision OV64 with 3X optical zoom and 6X in-sensor zoom. This is a 70mm equivalent lens with 64-megapixels and a f/2.6 aperture. The third camera is the ultrawide, which is a Sony IMX581. This is also a 48-megapixel lens with a f/2.2 aperture, and it’s a 14mm equivalent.
These sensors are once again tuned by Hasselblad, and it really seems like this partnership is starting to bear fruits for OnePlus and Hasselblad because each sensor is really incredible. Not to mention the fact that OnePlus lets you choose from 24mm, 28mm, or 35mm as the default option for the main lens, this is the same as the iPhone 15 Pro Max, and it’s honestly a feature that I hope gets put onto every other phone coming out over the next year. Being able to shoot in 35mm by default on a phone is incredible. Suffice it to say that is the default for me here.
35mm is the correct default focal length
OnePlus invited most of the US and Canadian media to New York City in late September for a one-day summit on the OnePlus Open, which consisted of a briefing about the device, as well as a cruise down the Hudson River (with Tacos!) to really try out the OnePlus Open. So I got a lot of photos that day with the OnePlus Open, and was able to try out the night mode too. But by far my favorite mode is setting the default focal length at 35mm. You can do this by going into the Camera Settings and then tapping on “Default wide-range focal length.” Which then gives you 24mm, 28mm, and 35mm.
35mm is great because it gives you a really natural bokeh effect, And it’s zoomed in a little bit, but not a ton. You can check out a number of 35mm shots I took with the OnePlus Open in the gallery below.
Here are a bunch of photos taken at the default focal length of 24mm. These still look great, however when you jump to 35mm, you get a bit more depth of field, which can make photos look a lot more dramatic.
This Telephoto lens is unreal
The thing that really shocked me with this camera setup was the telephoto lens. This is a 3X optical lens, but because the lens is so large, OnePlus is able to crop in and give you a 6X optical zoom, keeping it lossless. Meaning that you can take some incredible 6X zoom shots. It can also go all the way up to 125X (Galaxy S23 Ultra, who?), though as you’d expect, a lot of those shots are not worth it.
In the gallery below, you’ll see a number of shots using the 6X optical zoom here, and a bunch were taken at night on a boat in choppy water in the Hudson River. Which made it even more impressive in my opinion. A few shots were a bit blurry, and given the conditions, I can forgive it. But most came out really well here. They helped me fall in love with the OnePlus Open.
So why is this all such a big deal? Well, on foldable, typically, they get older flagship cameras or a step down from a flagship camera. They generally aren’t quite as good, but that’s not the case here. The OnePlus Open might have the best cameras on a smartphone this year. Google’s Pixel 8 Pro is doing a good job of competing with it, but a lot of what Google does is fixing stuff in post. Everything I’ve shown you in this camera section was unedited and taken with the default settings. And that makes this even more impressive.
Here are some shots taken with the telephoto lens at 3x and 6x.
Should you buy the OnePlus Open?
Despite my love for the OnePlus Open, it’s still tough to recommend it, mainly due to the price. This is a $1,699 phone at the end of the day. And while it does a lot of things right, not everyone can afford to or wants to spend that much on a phone. And I completely understand. Of course, part of what makes this tough for OnePlus is that it is not going to be available on carriers (it does work on all three US carriers, though). So customers won’t be able to take advantage of the crazy trade-in deals that some carriers tend to offer.
At the end of the day, the decision is up to you. And if you’ve been thinking about getting foldable, there’s no better option than the OnePlus Open as your first foldable experience. And that’s because OnePlus was able to sit back and see all the mistakes that other companies did with their early foldable devices, Samsung is on their fifth-generation foldable, and they are pretty far behind the OnePlus Open right now, surprisingly.
You should buy the OnePlus Open if:
You want the best all-around experience from a foldable.
You want flagship-level cameras.
You want a foldable that can charge fast.
You should not buy the OnePlus Open if:
You don’t want to spend over $1,000 on a phone.
You aren’t comfortable with a phone that could break.