Asus Zenfone 8 Review: Size isn't everything, and this tiny phone proves it
"The Asus Zenfone 8 is a well-designed, carefully thought-out compact flagship, but it competes against the competition due to issues with screen sensitivity and battery life."
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Small and light
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Great, but pretty simple camera
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Bad battery life
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Screen responsiveness issues
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No wireless charging
toAsus does not want to compete with the Galaxy S21 Ultra or another massive smartphone with the new Zenfone 8. Instead, it targets phones like the iPhone 12, Google Pixel 4a 5G, and Pixel 5 by creating a powerful mobile phone that fits well in your hand and pocket. The Zenfone 8 is a compact flagship and a really well designed one, but the bigger question is, does anyone really want something like this anymore?
The Zenfone 8 has been my main phone for a while now, and if I'm being completely honest, I missed a bigger phone despite its capabilities. However, if you're tired of stretching screen sizes with your thumbs, you will likely feel completely different. However, Asus doesn't have the right basics with the Zenfone 8 and there is a risk of it getting lost in the crowd. Let's go into that in more detail.
design
Asus has set itself some difficult goals with the Zenfone 8. They wanted a phone less than 70mm wide and less than 150mm high because the phone is convenient for one-handed use. It works because the Zenfone 8 is 68mm wide and 148mm high and I can reach most areas of the screen with my average sized hand without stretching or juggling the phone.
Andy Boxall / Digital Trends
The Samsung Galaxy S21 is a bit longer and wider, but the Pixel 5 and iPhone 12 Pro are much closer to the Zenfone 8 and both are equally manageable with one hand. The iPhone 12 Mini is considerably smaller than any other. The Zenfone 8 may be compact, but it doesn't really fill a niche in the market as Asus seems to believe.
Andy Boxall / Digital Trends
Asus used Gorilla Glass Victus above the screen and 3D frosted glass on the back of the phone to give it a sleek look. The Zenfone 8 is elegant, but also slippery, which makes one-handed operation awkward as it constantly asks for freedom. The 3D curve on the sides makes it comfortable to hold, but the smoothness means you'll end up gripping it pretty tight. However, it comes with a plastic sleeve that has a more grippy texture which will alleviate the problem – provided you don't mind using it.
Google Pixel 5 from left, Asus Zenfone 8 and Apple iPhone 12 Pro Andy Boxall / Digital Trends
There is another problem with the Zenfone 8. It's a bit boring to look at. The back is plain, the camera module is modest and very ordinary, and the black color of my test device doesn't give it much life either. The only flash of color comes from the electric blue on / off button, but it's not enough to improve the look of the phone beyond the mundane. The Google Pixel 5 is no longer the dullest phone on the table when the Zenfone 8 is around.
screen
The compact size extends to the screen. The Zenfone 8 has a 5.9-inch AMOLED screen with a refresh rate of 120 Hz, making it smaller than the 6-inch Pixel 5 and 6.1-inch iPhone 12 Pro. It looks excellent, with 1100 nits of maximum brightness and all of the nice contrasts, colors, and blacks we expect from an AMOLED screen, but Asus has yet to refine it. My review phone is running the final version of the software before it is released. More updates may be released soon after launch to address the following issues.
Andy Boxall / Digital Trends
The first problem concerns touch sensitivity and edge detection. The Zenfone 8 may have small bezels and no dramatic curvature, but it really suffers from phantom touches. I accidentally open endless apps, swipe down the notification shadow or switch between features without wanting to, and find myself handling the phone carefully to avoid these things. Very frustrating.
While not a big phone, Asus added a one-handed mode to the Zenfone 8 that minimizes the display in the lower part of the screen – the exact amount it covers can be adjusted in the settings – to make it easier with use with one hand. It seems like overkill after making a tiny phone, but what's worse is how it activates. You'll need to swipe down on the screen at the bottom. Due to the oversensitivity of the screen, this is likely to be a real problem. Usually the notification shadow or the app taskbar is displayed. When one-handed mode is activated, the slightest breeze will hide it from the screen.
Asus Zenfone 8, from left, Google Pixel 5 and Apple iPhone 12 Pro Andy Boxall / Digital Trends
I also haven't finished yet as the fingerprint sensor in the display is slow and unreliable. After annoying yourself about the Galaxy S20's built-in fingerprint sensor, which was fixed on the S21 series, and the lightning-fast fingerprint of the OnePlus 9 Pro, going back to a sensor that doesn't work very well seems unnecessary these days . There is also a face unlock feature, but it doesn't match the speed of other phones. The security of the Zenfone 8 is a cumbersome proposition.
camera
For an Android flagship, it's a surprise that the Zenfone 8 isn't filled with camera lenses. There are only two on the back – a 64-megapixel Sony IMX686 with optical image stabilization and a 12-megapixel Sony IMX363 wide-angle camera – and a single 12-megapixel selfie camera in a hole in the screen. All three have autofocus, which is a nice change, but no optical zoom function. It's all shockingly reluctant to Asus when some others may have added a useless macro camera to get a "better" spec sheet.
Andy Boxall / Digital Trends
The results are generally very good, although it is clear that the HDR effect is strong even when set to Auto. Personally, I don't mind the look, but others will find it very stubborn and prefer to turn it off. Adding a "bracketing" series, where three photos are taken with different exposure values, can also be responsible for this look.
There is a tendency that the camera is sometimes underexposed in difficult lighting conditions. You will find that these photos need editing to improve their appearance. The wide-angle camera is particularly sensitive to this and there isn't always much consistency between cameras. The photos taken with the main camera are vivid and vivid, and the scenes have a lot of depth and emotion, which encourages creativity.
It's a shame there isn't an optical zoom, but Asus adds a "lossless" 2x crop to the main camera. This function is somewhat hidden on the busy viewfinder screen as it is not located next to the main / wide-angle switch, but is controlled via a separate button in the corner. Otherwise, the app is very similar to other systems in terms of usage, but is sometimes a little slow with the trigger.
Instead of seeing what Samsung is doing with multiple lenses, Asus took inspiration from Google and gave the Zenfone 8 a pair of powerful cameras that take good photos. However, avid photographers will miss the versatility of an optical zoom.
Performance and software
Asus used the Qualcomm Snapdragon 888 processor for the Zenfone 8, which is definitely a flagship processor. It has up to 16 GB of RAM and 256 GB of storage space. I didn't notice any difference in performance compared to the Galaxy S21 +, OnePlus 9 Pro or Xiaomi Mi 11, which all run on the same chip. It's fast and powerful enough to play Genshin Impact smoothly and complete all of your daily chores with no hassle.
The software is Android 11 with Asus' ZenUI, which looks and works very similar to Android on Google Pixel. Unlike Asus' glitzy, optional sci-fi-style Android user interface on the ROG Phone 5, it's clean and uncluttered here, but still has tons of features. Some of the more useful Inones include the same Game Genie mode as the ROG Phone 5, which improves the phone's performance and operation while gaming, as well as special modes for scheduling battery charging.
Aside from the on-screen frustrations, the Zenfone 8 offers a true flagship phone experience in terms of performance and software in a compact package. The Snapdragon 888 has enormous reserves of energy and ensures that the phone will last for years, even if you play many of the latest games.
Battery and sound
A 4,000 mAh battery and the support of an included 30-watt Asus HyperCharge quick charger and Qualcomm Quick Charge 4.0 should clearly set the Zenfone 8 apart from the competition in terms of battery life – but this is not the case. In my use, the Zenfone 8 disappointed with a shorter than expected life, especially when used moderately hard.
Andy Boxall / Digital Trends
Although most of my day is connected to Wi-Fi and the phone is used for general calls, emails, social media, and some photos, the day usually ends around 40%. With phones like the Galaxy S21 Ultra, this type of usage usually leaves at least 60%. It gets a lot worse the more you use the phone a little more.
On a day with an hour of play, 30 minutes of video, multiple calls, and an hour-long WhatsApp video call, the battery hit 5% at 9 p.m., which is not good at all when phones like the Samsung Galaxy A52 5G get two days off a similarly sized battery . Go outside to the real world, where the phone was forced to connect to a regular cellular network and the battery drains faster than expected, even with minimal use.
The Zenfone 8 is not a phone that works hard when you want the battery to last a long time. Here, too, there may be updates that change the performance of the battery in the future, although, according to Asus, I am using the final version of the software. Quick Charge 4 took 90 minutes to charge, and the 30W HyperCharge block added 60% in 25 minutes. There's no such thing as wireless charging, a technology Asus prefers not to use to better manage cell life, but it's still a given on a flagship phone today.
Andy Boxall / Digital Trends
As with the ROG Phone 5, Asus worked with audio experts at Dirac on the Zenfone 8, and its two stereo speakers – powered by a Cirrus Logic CS35L45 amplifier – sound excellent. There's also Hi Res support and Qualcomm's Aqstic codec. There's even a 3.5mm headphone jack, a real rarity these days. All of this together makes the Zenfone 8 one of the best sounding phones you can get.
Price and availability
The Zenfone 8 is launching in the US, but at the time of writing the exact date and price has not been confirmed. In Europe, the Zenfone 8 starts at 539 euros for the 6 GB / 128 GB model, then rises to 599 euros for the 8 GB / 128 GB version and 699 euros for the top 16 GB – / 128 GB phone. Which region gets which model is also unknown, but it is possible that the Zenfone 8 with 8GB / 128GB is the cheapest available in your area.
Our opinion
Do you regret getting a "small" phone today? It really depends on what you want to do with it. The convenience of the Zenfone 8 disappearing into your pocket is great and can be used with one hand provided it's in the case. However, I missed out on a bigger screen, even the slightly larger 6.1-inch screen on the iPhone 12 Pro, while watching videos for an extended period of time.
Many have been complaining about the relative scarcity of compact, high-performance phones for some time, but there is indeed a healthy selection out there and it is an open question whether many people will actually buy them. If you're a firm believer in the compact phone, the Zenfone 8 should be at the top of your shopping list because the shape and size of the phone are mature. Plus, it has the same power and capability as massive phones like the Galaxy S21 Ultra.
However, the Zenfone 8 has major battery life issues, security options are slow, and the camera does not appeal to those who are serious about mobile photography. I like the Zenfone 8 and Asus' dedication to not following the crowd, but the downsides of the Zenfone 8 make it a tough sell over the competition.
Is there a better alternative?
The Zenfone 8 faces serious competition from Google and Samsung, as well as a challenge from Apple when you're ready to spend a little more. The Google Pixel 4a 5G is slightly larger than the Zenfone 8, but at $ 499 and a strong camera, it's a good buy. The Google Pixel 5 is just as compact as the Zenfone. It also has that fantastic camera and guaranteed software updates, but it costs $ 699. The Samsung Galaxy A52 5G has far better battery life, a great screen, and a decent camera for $ 499.
The Apple iPhone 12 Mini is $ 699 and is a true compact phone, while the slightly larger iPhone 12 is $ 799. The iPhone 12 Pro is the model we really recommend, but at $ 999, it's significantly more expensive than the Zenfone 8.
How long it will take?
Asus will be rolling out two major Android software updates for the Zenfone 8, but the timing may not be as immediate as it is with phones like the Google Pixel. The housing is both waterproof and dustproof according to IP56 and IP68. The Gorilla Glass Victus should provide adequate scratch and splinter protection for the screen. In addition, a basic cover is included in the scope of delivery, so that the Zenfone 8 should be very durable. With 5G and the latest Qualcomm Snapdragon 888 processor, it easily lasts two to three years before a replacement needs to be considered.
Should you buy it?
No. If a software update doesn't improve battery life, screen responsiveness, and fingerprint sensor performance, it can't quite keep up with the competition.
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