The ASUS ZenFone 2 Review
by Brandon Chester on May 26, 2015 8:00 AM ESTASUS ZenUI
Despite Google's continued improvements to the design and aesthetics of Android with each major version, manufacturers still find it necessary to make their own modifications to the interface as well as the standard suite of applications that the user will expect to have on the device. Some vendors, such as Motorola, are content to leave most of the Android interface intact, and only bundle a few of their own applications. Others like HTC and Samsung do a fairly comprehensive redesign of Android, including all of the system applications and elements of the interface.
ASUS tends to fall in the latter camp, with ZenUI being similar to Touchwiz and Sense in how it provides its own suite of applications, its own launcher, and its own design for areas like the notification drawer and the settings application. While some users are immediately put off by phones that don't run "stock" Google Android, the modifications that a manufacturer makes to the system are not necessarily negative.
The first thing I noticed after getting through the setup menu is the weather widget and the app shortcuts on the lock screen. I think having the weather available at a glance is a nice addition to the stock Android lock screen. The app shortcuts aren't implemented quite as well. When you touch them, the screen goes dark except for a bright area that you can drag around with your finger. You're just supposed to drag in any direction, which isn't made clear by the over complicated darkness and lighting effects that ASUS has thrown on. Google's lock screen definitely does a better job with the visual cues for activating the app shortcuts.
Once you unlock the phone, you're greeted with the launcher. There's nothing very special about the launcher itself, but ASUS offers a large number of options for customization which you can access by swiping up or long pressing on any of the launcher pages. I actually found that the defaults set by ASUS were to my liking for the most part, but I'm sure that many users will appreciate the ability to select different themes and customize certain aspects of their current theme like the animations and the application icons.
I think the design changes that ASUS has made to the OS can actually look pretty good. I like the changes they've made to the clock in the notification drawer, and having the brightness slider usable without swiping a second time to access the quick toggles is very useful. They've also added the ability to put application shortcuts and to customize the quick toggle menu. I've left it in its default state just so you can see what ASUS has opted to put there by default.
ASUS's design style is definitely not Material Design, but it doesn't look heavily dated or interfere with the user experience in a negative manner. Users who insist on having everything follow Google's guidelines will probably want to stick with Nexus devices, but I think most users won't be bothered by ASUS's changes. I personally think ZenUI is a much better interface than Touchwiz on the S6, although users who dislike Touchwiz may not feel like that's much of a compliment.
The big problem with the software experience on the ZenFone 2 is the obscene amount of preinstalled software. Some of it comes from ASUS, and some of it is quite frankly nothing more than shovelware. I'm thankful that ASUS has shoved the worst offending apps into a folder called Apps4U, and made them all uninstallable. Having Dr. Safety preinstalled on your phone is really like the Android equivalent of getting a Norton 360 trial on your PC.
On top of the shovelware, there's just a giant number of applications that I can't begin to explain. What is Omlet Chat, and why do I want it on my phone? Why is there a Mirror app that quite literally just turns on the front facing camera? Why is there a System Update app that just opens that section of the Settings app? Other strange decisions like the flashlight being a separate app is also annoying because it means that the standard flashlight quick toggle in the notification draw now takes you to an app.
ASUS can provide updates to all their apps via Google Play. Since that's the case, I don't know why they're stuck on the phone if you don't want them. While you can use the disable function to hide them, they still take up space on your phone. There isn't a huge impact in available storage (54GB) compared to most smartphones, but it is irritating at any rate.
In addition to the bloatware problems, I'm really beginning to get frustrated by the number of OEM applications that quite literally duplicate the functionality of the applications Google already provides. When it's a situation where the OEM applications genuinely makes improvements over Google's offerings, as in the case of camera applications and some web browsers, then I'm completely okay with it. But in many cases, such as the third party gallery apps I see on so many smartphones, the OEM app does absolutely nothing that Google's application doesn't do, and doesn't do anything better than Google's app does.
This is not an issue that is unique to ASUS, but they're guilty of it to a greater degree than some other manufacturers like Motorola. They have their own music app, their own mail app, their own photos app, their own browser, and all of them take up space that could be made available to the user.
The overall software experience on the ZenFone 2 ends up being a mixed bag. The software itself is not bad at all, but there's so many preinstalled applications from ASUS and other vendors, and almost none of them are useful. If you're one of the people who likes to root their phone you'll have a great time once you delete them from your device. If you aren't into that you'll have to settle for disabling them, which unfortunately won't free up any of the space they take.
Android Apps On An x86 Device
I've seen some concern from readers about potential issues with running applications due to the fact that the ZenFone 2 uses an Intel Atom CPU which uses the x86 instruction set rather than the ARM instruction set. It definitely seems like a reasonable concern, and so I felt it was important to address why it's not really an issue.
The important concept to understand here is the idea of an Instruction Set Architecture, or an ISA. This is different from the microarchitecture of the CPU itself. The microarchitecture is how the processor implements logic and the ISA, while the ISA itself relates to the programming of that CPU. It defines the processor's registers, native data types, and the set of opcodes or "instructions" that can be executed by the CPU. Different processors implement different instruction sets, and two processors can use the same instruction set but have completely different microarchitecture designs.
Since machine code targeting one ISA won't run on another, it would seem to make sense that Android phones that use Intel CPUs would be incompatible with Android applications. However, this is not true for the majority of Android applications which are written in Java. Java is unlike languages such as C++ which are compiled to machine code that is compatible with a given ISA. Instead, Java code is compiled to a special Java bytecode, which is then translated by a Java Virtual Machine into machine code. This is what enables the promise of "Write once, run anywhere" which is Java's main appeal.
Because the ART Runtime that Android now uses has support for ARM, MIPS, and x86, there's really no reason to be concerned about application support. Any application written in Java will be compiled to native code by ART and will work completely fine on your phone. This covers the vast majority of Android applications.
The only time an issue arises is when you start talking about applications made using the Android NDK, which are written in compiled languages like C++ and thus not easily portable. Thankfully, NDK-built applications that are not available in x86 are an increasingly rare sight these days, as the NDK has supported x86 for a number of years now. Consequently developers essentially have to choose not to support x86 at this point, as the NDK will otherwise hold your hand and encourage you to build for multiple architectures. And even then, although there's the potential for NDK applications to exist and not work on your Intel based phone (particularly old applications), Intel can still do binary translation from ARM to x86 which will allow the app to function, although it will have performance penalties.
I personally had no issues with application compatibility or performance on the ZenFone 2, and the same was true of Dell's Venue 8 7840 which I reviewed earlier this year. I can't even name any apps made using the NDK that aren't benchmarks. The only situation where there could be app problems would be extreme edge cases with very obscure apps that were programmed using the NDK for whatever reason. For the vast majority of Android applications, there's absolutely nothing that users should be worried about.
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re2onance - Friday, May 29, 2015 - link
nm, apparently that isn't correctmeacupla - Tuesday, May 26, 2015 - link
ok, done deal for a protective case for this thing then.blzd - Thursday, May 28, 2015 - link
That's one of the issues with larger phones such as this.jjj - Tuesday, May 26, 2015 - link
Actually in many markets the top Zenfone does compete with the G3 , S5 and the likes on price. Asus isn't quite hitting the 300$ + tax price everywhere and older flagships do get cheaper. The currency drops in some markets are not helping them either. The 200$ model is better value but it competes with A53 based devices that can be plenty cheaper with similar specs In China the TLC Meme da 3S ( 5inch 1080p , SD615 , 2GB RAM , 16GB NAND , 13MP and 8MP cams ,3050mAh ,139.6x69.6x8.9mm ,130g) just launched at 799CNY and that's 129$. Differences aside, they do have to compete with such devices. For the 300$ device you also got the soon to arrive SoCs, spending 300$ on this now might feel like a mistake in a few months.Wish you had the 1.8GHz 4GB RAM and 2GB RAM versions (they do have a lower clocked 4GB version) to compare battery life. In browsing the 4GB of RAM might be what kills it so fast.
Always wanted to ask about the LTE battery test , how much of the time time is idle or each of the LTE power states. Or maybe even better, how much data is used per minute or hour or w/e. Americans can afford to use a few GB per month but most of the world uses 10 times less or worse. In any case, the daily average usage is from almost 0 to bellow 200MB so LTE is most of the time idle if not disabled. Knowing how much data you use in testing battery life would help understand the relevance of the test and maybe help you better calibrate it in the future. So any chance you can provide some (rough) estimate on data usage when doing that test? Right now we have no idea if it's 60MB per hour or 10 times less and that's a huge range.
menting - Tuesday, May 26, 2015 - link
Frankly, I don't think the difference in 4GB RAM and 2GB RAM should make that much of a difference. A difference of doubling the refresh rate in the DRAM, as well as the difference in idle power should be peanuts compared to to what the other components are pulling.Glock24 - Tuesday, May 26, 2015 - link
I'm also interested in knowing if there's any difference in battery life between the 1.8GHz 2GB and 2.33GHz 4GB version.Some people in forums are saying the 4GB version drains the battery faster, some say the high battery drain was due to some bug in Lollipop. Maybe this was already addressed in a system update? All those comments about poor battery life of the 4GB phone come from people using the TW or India version with factory software version (which I assume is older than that on the US version). But still, would be interesting to know for sure if the 2GB version has better battery life.
I've read some people complain about the phone overheating, but there's no mention about temperatures in the review. Does it get hot during heavy use? Does it become so hot it's not comfortable to hold?
In the review Brandon talks about preinstalled bloatware, but does not mention about any useful bundled software. For example, I've read in other reviews about a bundled app that gives the user granular control over which applications run in the background and which ones are allowed to autostart, without the need for the phone to be rooted.
Also Asus gives you 5GB storage in Asus's own service with each device. How well or bad does the Asus Cloud app work? Does it make automatic backups? Is it easy to setup or use?
Chinaphonearena - Tuesday, May 26, 2015 - link
An outstanding review, man. Truly. I hope you don't mind me plugging my own of the 2gb/16gb/1080p model. It's not nearly as technical or thorough as this, but some may get something out of it.http://www.gizbeat.com/7449/asus-zenfone-2-full-re...
Also the tear down of the phone from a Taiwanese user, which shows some of the components Asus is using.
http://www.gizbeat.com/7622/take-a-look-inside-the...
ketacdx - Tuesday, May 26, 2015 - link
I have a TW 4GB model and its been getting 2 software updates a month fixing little things here and there on top of the ZenUI updates. I have not had any overheating or even it getting warm. My Nexus 5 from before this got way more hot. There is an Auto-start manager which is kind of neat but 80% of the preinstalled stuff is useless. Luckily most of it can be uninstalled and not just disabled which is cool. I don't know about the US model but the TW model gives me 100 GB's of free Google Drive storage for 2 years. I am in Canada and it enabled fine. I have never used to Asus cloud so I don't know how much they provide.Manch - Tuesday, May 26, 2015 - link
I'd like to see Windows Mobile loaded onto this and the benchmarks run again. Is that possible? MS said they would release a ROM that could be installed over android.Gich - Tuesday, May 26, 2015 - link
I think they made only a ROM for Xiaomi Mi4...