LG Optimus 4X HD Review

The LG Optimus 4X HD can brag to be the first phone announced with a quad-core chipset, although the HTC One X beat it as first to market. LG has loaded the full monty with it - a quad-core processor, large “True HD” display fit in a fairly compact for it body, and the latest Android version out of the box. 

As if top of the line specs were not enough, it also addresses some complaints we have with some new flagships, namely their closed nature. LG's finest has a removable battery, microSD card slot and a plain regular SIM card slot - that combination you can’t find in any of this season’s flagships.

Will these merits be enough for the LG Optimus 4X HD to stand against its formidable opponents like the Galaxy S III or the One X? Read on our review to find out...

In the Box:

  • Wall Charger
  • NFC Tags
  • microUSB cable
  • In-ear headphones
  • Warranty and information leaflets


The LG Optimus 4X HD lies pretty well in the hand for a slab with a 4.7” screen, thanks to the very narrow side bezel, and the compact chassis. In fact, it is as thin and light as the polycarbonate HTC One X with the same size screen, but is shorter and less wide, making it more suited for one-hand operation. The same goes if we size the Optimus 4X HD with the Galaxy S III, which is only marginally thinner, but much taller and wider.

You can compare the LG Optimus 4X HD with many other phones using our Size Visualization Tool.

Such a compact design is a commendable achievement on LG’s part, especially considering that the 4X HD has a slot that will take your existing regular SIM card, and you can easily expand its memory via microSD, or swap the battery with a recharged one if needed.

It doesn’t look as slick as the competing One X or the Galaxy S III at first glance, because of the plain rectangular shape, but it does have two chrome-like side trims, which infuse some excitement in the design, and make it easier to grab and pick up from the table.

The patterned back cover has slightly tapered edges, making the phone comfy to hold. Moreover, the sides are also patterned with prism shapes, helping your grip, and the corners are slightly “bumped”, bringing a bit of an understated elegance to the whole exterior. Yet when you look at the front, without the futuristic capacitive keys underneath the screen lit up, the Optimus 4X HD is simply a rectangular slab

The lock/power key at the top is easy to feel and press, but the thin volume rocker on the left in the chassis color takes some getting used to, for the sake of looking stylish. There is no protective flap or sliding lid over the MHL port at the bottom, taking one extra movement out from the procedure of plugging a cable in.


LG makes some of the best mobile screens around, and the 4.7-incher on the Optimus 4X HD is no exception. It is an IPS-LCD HD display with 1280x720 pixels of resolution, good viewing angles and eye-pleasing colors. Outside visibility is above average, too, if you rev up brightness to the max when battling direct sunlight.

Unfortunately automatic brightness only works from the percentage you’ve put it on in Settings up/down a preset range, so if you start from 0% it won’t go all the way up under direct sunlight, or if you set it at 50%, the screen will still be too bright when it’s dark around - hopefully LG will fix that with an update.

It is also a “True HD” display, as LG categorizes its high-def screens with a regular RGB pixel matrix arrangement, to set them apart from the PenTile AMOLED displays Samsung uses. With 313ppi pixel density, text appears crisp and HD media is a joy to watch.

LG Optimus 4X HD 360-Degrees View:



1. Tjey007

Posts: 86; Member since: May 22, 2012

thats a pretty impressive score..now whoever was criticizing LG ..take THAT.

4. Mafiatounes

Posts: 12; Member since: Jun 13, 2012

The device itself is very impressive and all, but most critics are on the software/support side at least with previous devices a user had to wait a very long time before a software update removed bugs/improved stability etc

5. Tjey007

Posts: 86; Member since: May 22, 2012

in India samsung users hardly get any soft update.so we should consider this fact unless its a gingerbread.

19. nb2six

Posts: 298; Member since: Apr 27, 2011

I hope they prove me wrong. I have been a critic of LG smartphones for a long time. I really hope this ones succeeds, We need another Great competitor out there to mix up the the constant dominance of the "Big Guys"

24. Tjey007

Posts: 86; Member since: May 22, 2012

after this surely "Life's Good" is not behind...One x is in big trouble.

2. bobfreking55

Posts: 866; Member since: Jul 15, 2011

Looks like an awesome phone. The third contender is in the ring! Your move Motorola, Apple and Sony, where is your HD Quad Core beast?

13. nnaatthhaannx2

Posts: 820; Member since: Oct 19, 2011

Well we can be sure that Apple's "Quad Core (processor) beast" is not coming anytime soon!

48. vedraj

Posts: 77; Member since: Oct 04, 2013

it still hasnt...so nice prediction.

34. DawsonLee

Posts: 26; Member since: Apr 03, 2012

I'm sure the Xperia's with the s4 chip can rival the quad cores out there, with Sony's knack of producing the perfect optimization with their phones, i don't see an issue here

37. vasboz

Posts: 6; Member since: Jun 22, 2012

You guessed it... Apple's iPhone(Y) 5 will be quad core 800Mhz bwahaha... like their Original iPhone 4... 800mhz while the rest of the competition was 1GHz+. Consider Apple's Quad 800Mhz vs Samsung's Exynos Quad 1400Mhz which is the fastest chip around at the moment. :)

40. Sangeet

Posts: 232; Member since: Apr 21, 2012

What will you do of clock speeds??. have dinner with them. The main thing is that the device should go smooth and Apple achives that Aim, and also lower clock speeds help save battery and Apple definitely suceeds in it

41. u-suck-more

Posts: 529; Member since: Aug 26, 2011

that's true tho~

3. wickets

Posts: 12; Member since: Jun 20, 2012

Thanks for the review. Its nice not to see any physical buttons. I'm guessing this isnt heading to verizon anytime soon?

38. vasboz

Posts: 6; Member since: Jun 22, 2012

Not having physical buttons can be a rather pain in the arse. One thing about being able to unlock a device on your desk at work by pressing the button is amazing. Not having to fumble around the top or sides... or in my previous Motorola Atrix's case bloody underneath... bad bad choices in functional form.

6. shadez10

Posts: 427; Member since: Jan 15, 2012

Looks like a Galaxy S2

14. u-suck-more

Posts: 529; Member since: Aug 26, 2011

get your eyes checked

17. Jericho unregistered

Dog Eyes.

30. Joshing4fun

Posts: 1245; Member since: Aug 13, 2010

I mean it is rectangular? But this is how I wanted the SIII to look!

7. XiphiasGladius

Posts: 813; Member since: Aug 21, 2011

So far this is the one LG phone I'm interested in, The design is somewhat attractive to my taste. Now let the 3 way Royal Rumble between the Samsung Galaxy SIII, HTC OneX & LG 4X HD commence. .

8. Tjey007

Posts: 86; Member since: May 22, 2012

probably the 3 best right now.for me s3 > one x >4x.

9. XiphiasGladius

Posts: 813; Member since: Aug 21, 2011

Hard to say on to which will come 2nd, to settle that would be like a coin flip, but s3 is arguably the better of the 3 in my opinion. LG's fall out was the waaaay to late software update of their flagship phones. Hope they straightened out that factor this year. . .

27. OptimusOne

Posts: 694; Member since: May 22, 2012

one x beats 4x but sIII smashes one x and 4x

10. Grishm

Posts: 54; Member since: May 18, 2012

This must be the only LG phone which I cared to even notice! XD

11. thunderising

Posts: 232; Member since: Nov 25, 2011

Excellent phone. Great competition!

15. u-suck-more

Posts: 529; Member since: Aug 26, 2011

will this phone sell? yes of course it will. why? it is cheaper than the S3, has a regular SIM card slot (which removes the hassle of having to change the SIM card), expandable memory and removable battery. as the article said, among the 3, the 4x is the most versatile, and i'd take this over the GS3 anyday. this looks so much more nicer

16. Jericho unregistered

Nuff said.

18. Jericho unregistered

Awsome got more score than Htc one X. But its not about the score in the end personal preference is what matters. Continue your great work LG!

20. guruprasad

Posts: 33; Member since: Jul 13, 2011

gr8 phone....btw y only 8.5....phonearena..........

21. PhilTech

Posts: 11; Member since: Jun 16, 2012

Finally!!...LG is listening...I would totally get this over the S3. The S3 is a great phone but it has too many features that I probably wont use on a daily basis. So this is the winner IMO between the One X and S3. I'm guessing it's cheaper that both and pretty much has everything. The 2 things to fix would be the annoying migraine inducing auto focus during video capture and timely updates. If LG can fix that then they definitely have a winner. They might also want to improve their marketing. I guess that's 3 things they need to fix.

22. aoikemono27

Posts: 177; Member since: Feb 27, 2012

Have read a couple other reviews and this one. The phone is nice on its own, but when compared to other top flagships, it will probably be in fourth or fifth place. There's very little reason to get this phone other than for its design and maybe its compactness, which I find quite enamoring. It's a shame that Samsung's Korean rival still hasn't got their smartphone battle plan in order and instead is just content with poking it's head above the clouds to glimpse the view without actually breaking through. The all plastic design follows the same faux-leather texture back which I have never liked and now there are TWO prominent chrome rims sticking out. If it was a solid metal maybe, but it's undoubtedly some cheap breakable and squeezable plastic that you have to hold onto. LG hasn't touted any polycarbonate or such, no kevlar, or glass, so materials don't sound too enticing. LG may also win awards for their LCD tech, but why does the HTC One X have a more impressive screen with the laminated glass and painted on look? Other reviews have mentioned this, but the LG screen has a comparatively thick sheet of reflective glass that you can clearly see in the video tour. Coupled with the thick and unpleasant black border that gives it an old phone or budget phone vibe, the results are not very impressive. Then there is the simplistic UI with large, stretched looking fonts and icons. It looks more like a 800x480 budget display and single-core Froyo innards than its actual 720p goodness and quad-core ICS freshness. Changing the fat looking font and its size, as well as making the icons more compact and less stretched out looking, decreasing the size and increasing the number on-screen, would improve the look and feel drastically. Ditto for transitions. Why LG cannot understand these basic basic concepts, I do not know. The screen brightness issue also seems like something more suitable to an early prototype than a retail product. The camera doesn't really look better than their old 8MP ones. Actually, it is similar to the HTC One X. They both lack shades of anything, losing significant detail, and instead opt to smear everything in solid colors, giving pictures a cartoony look. The One X oversharpens more and is much darker. The Optimus 4x brightens far too much. Both are more like instagram pictures than real ones. Then there is the video capture. Audio is quite stellar sounding, and the framerate is smooth, including exposure. But the video has the same cartoony shadeless solid color look of the still images, and if it wasn't obvious from the videos, a very serious issue with focusing. A quick search through youtube will find that this is not an isolated incident, and all video exhibit this epileptic refocusing eye dilating problem, which happens every few seconds. How something so blatantly broken like this got rubberstamped and tested by so many people is probably the 8th wonder of the world. Neither benchmarks, battery life, nor performance is a

* Some comments have been hidden, because they don't meet the discussions rules.

Optimus 4X HD
  • Display 4.7" 720 x 1280 pixels
  • Camera 8 MP / 1.3 MP front
  • Processor NVIDIA Tegra 3 T30, Quad-core, 1500 MHz
  • Storage 16 GB + microSDXC
  • Battery 2150 mAh(10.86h 3G talk time)

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