Introduction and Specifications
The ASUS Zenfone 2 is a 5.5-inch smartphone with a premium look and the specs to match. But the real story here is that it sells for just $199 or $299 unlocked, making it a tempting alternative to contract phones without the concessions often made with budget devices; at least on paper. Let's take a closer look to see how the new Zenfone 2 stacks up! (Note: a second sample unit was provided by Gearbest.com.)
When I first heard about the Zenfone 2 from ASUS I was eager to check it out given its mix of solid specs, nice appearance, and a startlingly low price. ASUS has created something that has the potential to transcend the disruptive nature of a phone like the Moto E, itself a $149 alternative to contract phones that we reviewed recently. With its premium specs to go along with very low unlocked pricing, the Zenfone 2 could be more than just a bargain device, and if it performs well it could make some serious waves in the smartphone industry.
The Zenfone 2 also features a 5.5-inch IPS LCD screen with 1920x1080 resolution (in line with an iPhone 6 Plus or the OnePlus One), and beyond the internal hardware ASUS has created a phone that looks every bit the part of a premium device that one would expect to cost hundreds more. In fact, without spoiling anything up front, I will say that the context of price won't be necessary to judge the merit of the Zenfone 2; it stands on its own as a smartphone, and not simply a budget phone.
The big question is going to be how the Zenfone 2 compares to existing phones, and with its quad-core Intel Atom SoC this is something of an unknown. Intel has been making a push to enter the U.S. smartphone market (with earlier products more widely available in Europe) and the Zenfone 2 marks an important milestone for both Intel and ASUS in this regard. The Z3580 SoC powering my review unit certainly sounds fast on paper with its 4 cores clocked up to 2.33 GHz, and no less than 4 GB of RAM on board (and a solid 64 GB onboard storage as well).
Subject: General Tech, Mobile, Shows and Expos | May 27, 2015 - 10:55 PM | Ken Addison
Tagged: wearable, tech world, smartwatch, smartphone, smart cast, magic view, lenovo tech world, Lenovo, concept
Today at the Lenovo Tech World keynote presentation, Lenovo CTO Peter Hortensius took the opportunity to show some of the far reaching concepts for smartphones and smartwatches.
The Magic View smartwatch is a stylish, round smartwatch reminiscent of the Moto 360 that seems from the concept renderings to be based around Android Wear. However, the uniqueness comes from what Lenovo is claiming makes it the only smartwatch with two screens.
Optical reflection is used inside of a portion of the strap in order to project a second “virtual interactive display” more than 20 times larger than the integrated display. This is made possible through Lenovo-designed silicon aimed at miniaturizing the components for this type of projection while maintaining the same performance.
Lenovo claims this secondary screen will be useful for things like maps, as well as photo and video viewing, but it be remains to be seen if users would favor a virtual display like this over simply using their existing smartphone display. Privacy is also a big part of what Lenovo is pitching with the Magic View. Since users must place the lens portion next to their eye, other people in the same area cannot look over their shoulders and view potientially sensitive information.
The Lenovo Smart Cast concept plays on a similar idea as the Magic View. Through the use of a build in laser projector, as well as specialized sensors, Lenovo aims at allowing users to project a large virtual touch screen onto tabletop surfaces.
With the use of infrared sensors, users can touch the surface underneath the projection and interact just as if it were a physical display. Lenovo points towards this being useful for such applications as virtual keyboards in productivity apps, or even for media control of projected movies and light gaming such as Fruit Ninja.
The projected display is also independent of the smartphone display, allowing things such as two separate views for video chatting applications.
It remains to be seen if these concepts will ever actually make it into production devices, and if those devices will ever hit North America, but it's always interesting to see what R&D divisions of large companies like Lenovo are up to.
Subject: Mobile | April 3, 2015 - 08:00 AM | Tim Verry
Tagged: snapdragon 801, smartphone, quad hd, LG, Android 5.0
Just Delivered is a section of PC Perspective where we share some of the goodies that pass through our labs that may or may not see a review, but are pretty cool none the less.
Find the LG G3 on Amazon!
- LG G3 32GB Unlocked US Version (T-Mobile) - $540
- LG G3 16GB Unlocked International Version - $380
- LG G3 32GB Unlocked International Version - $435
Last week I stopped by the T-Mobile store in the mall, handed over two old phones, and ported over two lines from Verizon. I walked out with a cheaper contract with unlimited data (versus 4GB on Verizon) and a shiny new (to me, it's been out for awhile) LG G3. Which brings me to this post.
First off, the LG G3 is huge. This is the
smallest tablet largest smartphone I have ever owned. Measuring 146.3 x 74.6 x 8.9 mm, the 149g smartphone is slightly smaller than the Apple iPhone 6 Plus and a bit chunkier at its thickest point. It is however easier to hold and operate (especially one handed) than the iDevice. The is dominated by a large 5.5-inch Quad HD IPS display (2560 x 1440 resolution) and features round edges and a curved back. I chose the white version, but it also comes in black, blue, gold, red, and purple (the international versions). Except for the top bezel that holds the webcam, light sensor, and speaker, and that bit of empty space below the display with the LG logo, the G3 has super thin bezels. In fact, the phone is not much larger than the display (certainly width wise).
The LG G3's display looks amazing with sharp text and extremely detailed videos (the included 4k content is great). It is highly reflective and I had to crank the brightness all the way up to be able to read it under direct sunlight (my S4 was similar in this respect). In other lighting situations, it worked really well.
An infrared transmitter, microphone, micro USB port, and 3.5mm audio jack are placed along the top and bottom edges of the phone. Like its predecessor (the G2), LG has placed the power and volume buttons on the back of the device rather than the sides (Update: I am generally liking this setup now). The recessed buttons sit beneath the camera lens and are easier to find and use than I expected them to be. Now that I am getting used to them, I think LG is onto something (good) with this button placement. There is also a 1-watt speaker in the lower left corner of the back cover for media playback and speakerphone calls. For a smartphone speaker it can get fairly loud and does what it is supposed to. It is not spectacular but it is also not bad. I mostly use headphones but it's nice to know that I have a decent speaker should I want to share my music.
The curved back cover makes it easy to hold in one hand (even if I can't hit all the on-screen buttons without a longer thumb heh) and I feel like it will be dropped less frequently than my previous phone (the Galaxy S4) as a result of the form factor. One big change with the G3, for me, is the lack of buttons below the display (capacitive or physical), but I am slowly getting used to the on-screen navigation on Android (especially once I figured out I could long press the recent apps button to regain the menu button I miss from my S4).
Aside from the display, the G3 features a 2.1MP front facing camera and a 13MP rear camera. The rear camera is where things get interesting because it is paired with a dual LED flash, laser focus, and optical image stabilization (OIS) technology. Outdoor shots were excellent and indoor shots with enough lighting were great. In low light situations, the camera left something to be desired, and I was kind of disappointed. Using the flash does help and it is quite bright. However, I tend to not like using the flash unless I have to as photos always look less natural. For as small as the camera is though (the lens and sensor are tiny), it does pretty well. In good lighting conditions it is trounces my S4 but the (upgrade) is much less noticeable with less light (the G3 does have a much brighter flash).
The laser focus is a really cool feature that works as advertised. The camera focuses extremely quickly (even in low light) allowing me a much better chance to capture the moment. It also refocuses (tap to focus) quickly.
The camera software is not as full featured as other smartphones I have used, however. I was put off by this at first as someone that likes to tinker with these things but at the end of the day it does what it is supposed to and it does it well (which is to take photos). You can swipe to switch between the front and back cameras, choose from a couple preset modes, and adjust basic settings like resolution, voice controls, HDR, and shutter timer. For "selfie" fans, LG has a feature where you can make a fist in the air and it will start a countdown timer. While I have not tried the voice commands, I did try the gesture and it does work well.
Anyways, before this turns into a full review (heh), it might help to know what's under the hood as well. The G3 is powered by a Qualcomm Snapdragon 801 SoC which pairs four Krait 400 CPU cores clocked at 2.5 GHz with an Adreno 330 GPU. The phone comes with either 16GB internal storage and 2GB of RAM or 32GB internal storage and 3GB RAM. I chose the higher end model to get the extra RAM just in case as I plan to have this phone for a long time. It supports 4G LTE, 802.11ac Wi-Fi, Bluetooth 4.0, GPS, and NFC (Near Field Communication). You can also use it with Qi-enabled wireless chargers if you purchase a supporting back cover. The G3 is running Android 4.4.2 on T-Mobile but it does support Android 5.0 and some carriers have already pushed out updates.
The G3 comes with a 3,000 mAh battery and a 1.8 amp USB charger. It does take awhile to charge this thing (my 2.1 amp Samsung charger is a bit faster), but once it is fully charged it will easily last all day including listening to streaming music and audiobooks, text messaging, and web browsing. (Update: I don't have specific battery life numbers yet, but I generally only need to charge it once a day so long as I keep the display brightness around half. If I crank the brightness all the way up I can almost feel the battery draining by the second heh.)
Like Samsung, LG has a battery saving feature that will kick in at 30% to conserve battery but turning down the screen brightness, turning off radios that are not active, and a few other configurable battery drainers (haptic feedback, notification lights, and account syncing). I do like their battery settings page as it will estimate the time needed to charge and the time remaining as it discharges along with a nice graph of battery percentages over time. Other Android phones have something similar but LG has fleshed it out a bit more.
Just for fun, I installed 3DMark and ran the Ice Storm benchmark. The LG G3 maxed out the Ice Storm test and scored 10,033 points in Ice Storm Extreme. Further, it scored 16,151 in Ice Storm Unlimited. In comparison, the (apparently extremely popular judging by the feedback) Samsung Galaxy Centura scored 536 in Ice Storm and 281 in Ice Storm Extreme respectively (hehe). My Galaxy S4 is no longer available for me to test, but TweakTown was able to get 6,723 in the Ice Storm Extreme test.
LG packs light with only the smartphone, USB cable, USB charger, and a quck start guide included in the box. No headphones or extra accessories here.
In all, so far so good with the LG G3. I am very happy with my purchase and would recommend checking it out if you are in the market for a large display-packing smartphone that's not an iPhone 6 Plus or Galaxy Note 4 (which Ryan recently reviewed). If you want the latest and greatest Android phone and can afford the premium (about $300 more in my case when I compared them), grab the Note 4. On the other hand, if you are looking for a Android smartphone with a large display, good battery life, and decent hardware specifications, the LG G3 is a respectible choice that delivers and doesn't break the bank.
Have you tried out the G3? What do you think about the trend for larger and thinner smartphones? This is hardly an exhaustive review and there are things I didn't get into here. After all, I'm still checking out my G3. With that said, from first impressions and about a week of usage it seems like a really solid device. I've since fitted it with a screen protector and a case so as to not break it – especially that hi-res display!
Subject: General Tech | February 24, 2015 - 12:56 PM | Jeremy Hellstrom
Tagged: fud, security, smartphone
Tracking your smartphones location via aggregate battery usage is not the most efficient or accurate method but it can be done and Samsung (and others) have not provided a switch which makes that particular data private. Researchers have shown that by tracking the battery drain of the 3G cellular radio on the battery one can determine distance from the cellular base station the phone is connected to and a coarse location based on interference environmental factors such as buildings which partially block the signal. It is only a very coarse locator but does give better information than just the base station the phone is connected to and as we are creatures of habit it allows tracking normal patterns of movement. This is nowhere near as accurate as GPS tracking and does require a bit of work to pull off but as battery usage and levels are sent by the phone in the clear with no method of preventing that it should cause some privacy concerns for users. You can read the research paper (in PDF) by following the link from The Inquirer.
"SCIENTISTS have warned of a new smartphone risk after discovering that battery power can be used to track a person's movements."
Here is some more Tech News from around the web:
- A billion things are already on the IoT: Verizon @ The Inquirer
- ARM and IBM bolster Internet of Things with cloud-based mbed starter kit @ The Inquirer
- May the fourth be with you: Torvalds names next Linux v 4.0 @ The Register
- UK Scientists Claim 1Tbps Data Speed Via Experimental 5G Technology @ Slashdot
- Intel Moving Forward With 10nm, Will Switch Away From Silicon For 7nm @ Slashdot
Subject: Mobile | January 5, 2015 - 03:02 PM | Sebastian Peak
Tagged: ZenFone 2, zenfone, smartphone, lollipop, ces 2015, CES, asus, Android 5.0, Android
ASUS has announced the all-new ZenFone 2 (model ZE551ML, if you prefer), their 5.5-inch flagship smartphone in the ZenFone family.
The ZenFone 2 has a new ergonomic design that tapers to a slim 3.9mm at the edges, and the front is dominated by a 5.5-inch full HD IPS display (1080x1920) with 403-ppi pixel density and a 178-degree viewing angle. (Does this sound familiar, Apple iPhone 6 Plus?) The ZenFone 2 also features 13MP rear and 5MP front “PixelMaster” cameras, and is powered by a quad-core 64-bit Intel Atom processor with 4GB RAM, and 4G/LTE connectivity from the Intel SoC.
Specs are useless without an interface, and ASUS is using the latest version of Android, 5.0 “Lollipop”. This is not “stock” android, however, as ASUS is using a new version of their ZenUI, which they claim is “the world’s first fully-customizable interface”. The phone is bundled with Trend Micro security software as well (ah, bundled software) and gets its juice from a large 3000mAh battery with fast-charging technology (which I personally find indispensable with my Nexus 6).
Available in all of these phone-tastic colors
The screen is protected by the industry-standard Corning Gorilla Glass 3, which has an anti-fingerprint coating to reduce friction. One odd design feature is the position of the volume control, which is on the middle of the phone's back (just under the rear camera).
The ZenFone 2 will start at $199 USD (I would assume this is a contract price), but no specific word on availability yet.
Follow all of our coverage of the show at http://pcper.com/ces!
Subject: General Tech, Mobile | January 5, 2015 - 03:00 PM | Tim Verry
Tagged: vibe x2 pro, vibe x, vibe band, smartphone, qualcomm 600, Lenovo, ces 2015, CES, android l
Alongside the onslaught of new notebooks and tablets, Lenovo is launching a limited edition Vibe X2 Pro smartphone and a new wearable accessory called the Vibe Band VB10. As an added bonus, Lenovo is also showing off a new "Selfie Flash" VIBE Xtension that will work with the Vibe X2.
The Lenovo VIBE X2 Pro is an amped up, limited edition, version of the VIBE X2 that debuted a few months ago. The X2 Pro takes the layered aesthetic further by moving to a larger (but thinner) full metal body with unique color options. It features a 5.3" 1920 x 1080 resolution display, dual 13MP cameras (with support for the Selfie Flash accessory), Android Lollipop support, and tweaked internals. The phone measures 146.3 x 71 x 6.95mm and weighs 140g. The Pro version features champagne gold, electric blue and rock pink color options compared to the white, champagne gold, and red colors of the non-pro Vibe X2.
Internally, Lenovo has opted for the Qualcomm Snapdragon 615 SoC which is a 64-bit octo core processor clocked at 1.5 GHz and a Adreno 405 GPU. Qualcomm specs the CPU portion as being two ARM Cortex A53 quad cores clocked at up to 1.7 GHz and 1.0 GHz respectively. The SoC is paired with 2GB of internal memory and 32GB flash storage (no microSD expansion). The phone is powered by a embedded 2,410 mAh Li-Polymer battery. Connectivity includes 802.11ac Wi-Fi, Bluetooth 4.1 LE, LTE cellular radio, analog audio output, micro USB, and dual nano SIM slots. Sensors include A-GPS, gravitation, proximity, light, and e-compass.
The phone will run the company's VIBE UI 2.0 on top of Google's Android Lollipop operating system.
In all, the Vibe X2 Pro has a larger display, better camera, bigger battery, new colors, a metal body, and different CPU/GPU.
The limited edition VIBE X2 Pro will be available in China and Europe (specific countries will be announced at a later date) for $499 starting in April 2015. Notably, this smartphone will not be available in the US.
The VIBE Band VB10 is a wearable watchband accessory that pairs with the Vibe X2 (and also supports iOS devices). A metal bond and rubberized strap host a curved E-Ink display (230ppi) along with a battery that can reportedly power the Bluetooth radio and constantly powered-on display for seven days. The Vibe Band can display messages and notifications, be used to accept or reject phone calls, act as a warning if go out of range of your phone, and collect data (steps, calories, distance, and sleep) for a fitness app that can graph your performance and set personalized goals.
The wearable weighs about 30 grams and runs Android 4.4. Further, the VB10 is IPX7 rated as being waterproof up to 1 meter for 30 minutes.
The Vibe Band VB10 will be available in April (China and Europe) for $89.
Finally, Lenovo showed off a new Vibe Xtension called the Selfie Flash. The Selfie Flash plugs into the audio out of the Vibe X2 and X2 Pro to illuminate self portraits in low light environments. The circular add-on is synchronized to the Vibe X2's shutter and a ring of eight LEDs cast diffused light over a one meter distance according to Lenovo. It is rated at 100 selfies per charge.
The new selfie-enhancing Vibe Xtension will be available in April for $29 in markets where X2 and X2 Pro smartphones are sold.
Follow all of our coverage of the show at http://pcper.com/ces!
Subject: General Tech, Mobile | January 5, 2015 - 03:00 PM | Tim Verry
Tagged: CES, smartphone, p90, LTE, Lenovo, Intel, ces 2015, atom z3560
Unveiled today at CES, the Lenovo P90 is the first smartphone to use Intel's latest Atom Z3560 processor and 5-mode XMM 7262 modem. The smartphone pairs the high end hardware with a colorful body that weighs 156g and is a mere 8.5mm thick.
The Lenovo P90 brings Intel back to the Lenovo smartphone family following a year dominated by smartphones powered by MediaTek and Qualcomm SoCs. Unfortunately, like the K900 that came before it, the P90 will not be available in the United States. Now that I've crushed the dreams of some US readers...
On the outside, the P90 looks to be your average roughly rectangular smartphone with curved edges. Lenovo does manage to spice things up a bit by offering it in Lava Red in addition to Pearl White and Onyx Black. A large 5.5" 1920x1080 display dominates the front of the device. A 5 megapixel front facing camera sits above the display and a 13MP camera with flash and optical image stabilization (OIS) sits on the back.
The Lenovo P90 is powered by a 64-bit quad core Intel Atom Z3560 clocked at 1.83 GHz paired with 2GB of RAM and 32GB of internal flash storage. Lenovo is using the Intel XMM 7262 modem for cellular connectivity which is LTE capable and supports data speeds of up to 150 Mbps download and 50 Mbps upload (obviously, dependent on carrier support, congestion, and signal strength, et al). A large 4,000mAh battery powers the P90.
Unlike the Vibe X2 Pro, the Intel-Powered P90 will ship with Android 4.4 KitKat. Obviously, the Atom-powered phone will have to use binary translation for many apps that are not available natively in x86-64, but the Z3560 should be plenty of hardware to handle that overhead even with the alleged 20%-40% performance hit.
The Lenovo P90 will be available in February for $369. It will hit China and Europe but not this side of the pond.
Are you interested in an Intel-powered smartphone? Do you care what the SoC is, or do you just want something with enough oomph to run your applications? I do wish Intel would be more aggressive in getting its SoCs into phones that will be available here, if only for more competition.
Follow all of our coverage of the show at http://pcper.com/ces!
Subject: General Tech | November 18, 2014 - 12:53 PM | Jeremy Hellstrom
Tagged: Intel, tablet, smartphone
Intel's smartphone and tablet divisions are being rolled up under Kirk Skaugen's PC Business division in what was described as an attempt to "accelerate Intel's opportunity in the marketplace". This is definitely needed as Intel is having great difficulties garnering market share in the mobile industry, the only successes they have had are with larger more expensive tablets. One possible benefit of this merger that was mentioned in the Inquirer's article was Intel's plans to leverage the growing use of LTE in both tablets and laptops, perhaps we shall see a 4G card become far more common in even basic models. Intel implied that they are not planning any layoffs at this point although unless their ultramobile division can pick up the pace it seems inevitable that some will feel the axe. We shall see over the coming year if Intel's focus on low powered silicon can help in their battles against incumbents such as ARM and Qualcomm.
"INTEL HAS ANNOUNCED plans to merge its smartphone and tablet operations with its PC division in a bid to make the two businesses more efficient, and to further compete with rivals in the mobile semiconductor market."
Here is some more Tech News from around the web:
- A first taste of Lollipop on Nvidia's Shield Tablet @ The Tech Report
- The optic NERVE of it: Intel declares WAR on InfiniBand @ The Register
- Lenovo unveils a water-cooled dual-socket Intel Xeon E5 server @ The Inquirer
- Asustek said to be adopting Qualcomm solution for new ZenFone; looking for price cut from Intel @ DigiTimes
Subject: Mobile | September 6, 2014 - 12:11 PM | Tim Verry
Tagged: snapdragon, smartphone, qualcomm, Lenovo, ifa 2014
In addition to new traditional PCs, Lenovo unveiled two new smartphones under its Vibe series. The Vibe Z2 and Vibe X2 are 64-bit mobiles ready for Android L. Both models will be available in China and select regions later this month.
First up is the Lenovo Vibe X2 which is the successor to the Vibe X. Lenovo's new flagship smartphone is 7.27mm thick and uses a layered design that uses a three color gradient evident when looking at the outside edges of the phone. The Vibe X2 features a large 5-inch 1920 x 1080 IPS display, 5MP webcam, and 13MP rear camera with flash.
The Vibe X2 is powered by a MediaTek MT6595M SoC, 2GB RAM, 32GB internal storage (no MicroSD expansion), and a 2,300mAh battery. The phone will come in dual and single SIM variants depending on the country. The MediaTek MT6595M "True8Core" processor features eight ARM cores in a big.LITTLE configuration with a maximum clockspeed of 2GHz on the four Cortex A17 cores and 1.5GHz on the four low power Cortex A7 cores. The SoC also features a 16MP image signal processor, video encoding hardware (for recording up to 1080p60), and a PowerVR G6200 GPU clocked at 450MHz.
In all, the Vibe X2 should perform noticeably better than last year's Vibe X thanks to the updated SoC with faster GPU. Moving to the big.LITTLE setup should also net users better battery life, which is always a good thing. For even more battery life though, Lenovo is offering up clip-on attachments – called Lenovo Xtensions – that include an extra battery and a version with a larger speaker.
While the hardware is ready to run Android L, the phone will ship with Android 4.4 KitKat along with Lenovo's Vibe UI 2.0.
The flagship Vibe X2 will be available later this month in China starting at $399 USD.
Lenovo is also releasing the Vibe Z2 which is a stylish metal unibody design with a brushed metal finish. The phone is 7.8mm thick and weighs 155 grams. The front of the Vibe Z2 is dominated by a 5.5-inch 1920x1080 display. An 8MP front camera sits above the display and uses an optional guesture-based shutter that can be triggered by smiling, blinking, or making a "V" sign with your hands. According to Lenovo, the Vibe Z has "mastered the art of the selfie." On the backside of the smartphone sits a 13MP camera with a Sony Exmor BSI (backside illumination) sensor and optical image stabilization which is nice to see on a smartphone.
Inside the Vibe Z2, Lenovo is using a Qualcomm Snapdragon 401 SoC, 2GB RAM, 32GB internal storage, and a 3,000mAh battery. The phone supports Dual SIM cards as well as LTE, HSPA+, WiFi, and Bluetooth networks. The Snapdragon 401 is a recent Qualcomm chip that can be clocked up to 1.2GHz with a Adreno 305 GPU clocked at up to 450MHz (Lenovo did not give specific clockspeeds, but those are the speeds that the 401 is rated at).
The Vibe Z2 will be available in China and other regions where Lenovo has a smartphone presence later this month starting at $429 USD.
Subject: General Tech | July 23, 2014 - 01:40 PM | Tim Verry
Tagged: xiaomi, snapdragon 801, smartphone, mobile, LTE, Android 4.4.2
Yesterday, Xiaomi revealed a powerful smartphone called the Mi4 that looks to give the unlocked OnePlus One a run for its money. The new smartphone is launching first in China with an international version coming in the future.
The Xiaomi Mi4 features a 5" 1080p IPS LCD display, 13MP rear camera, and 8MP webcam. A metal band surrounds the outside edges of the phone while a stainless steel frame adds rigidity and protection for the internal hardware. The other bits of the case are plastic, however likely due to weight and signal reception concerns. There is a removable back cover that is available in several different designs and colors. The Mi4 is slightly bulkier than its predecessor at 0.35-inches thick and 149 grams.
Internally, the Mi4 uses a Qualcomm Snapdragon 801 SoC with four Krait 400 CPU cores clocked at 2.5GHz and an Adreno 330 GPU. Further, the smartphone features 3GB of RAM and either 16GB or 64GB of internal storage. It is powered by a 3,080 mAh battery which should provide ample battery life. Wireless connectivity includes dual band 802.11b/g/n/ac Wi-Fi, Bluetooth 4.0, NFC, 3G, and LTE. The WCDMA version of the smartphone will be available first with a CDMA version coming next month, and a 4G LTE capable device coming in September.
The smartphone runs Android 4.4.2 with a highly customized MIUI5 user interface. An updated version of the UI, called MIUI6 is reportedly coming in August, but it is unclear how soon Mi4 users can expect an upgrade.
The Xiaomi Mi4 will be available on July 29 for 1,999 Yuan ($322 USD) for the 16GB version and 2,499 Yuan ($403) for the 64GB version. Initially, it will be 3G only, but a 4G LTE capable version of the smartphone is coming in September (presumably for the same price). Even further out, an unlocked international version is said to be available for purchase in the future.
In all, the Mi4 looks to be a decent phone with enough design tweaks and hardware oomph to give existing high end smartphones a run for their money. You do sacrifice micro SD card support and stock Android, but if you can live with that and are in the target market (or can wait for an international version) it is worth keeping an eye on!