LG G Flex Review

Call Quality

We’re given a damn good calling quality experience with the handset. Again, the unique design of the smartphone comes to mind, as its curvature is ideal when resting it against our face – ensuring that the microphone and earpiece are perfectly in line to our mouth and ear.

Both the earpiece and speakerphone deliver powerful volume tones that make voices easily heard even in the noisiest of environments – though, voices through the earpiece have a subtle hiss, but it’s not too distracting. On the other end of the line, our callers tell us that they’re pleased by the clear, crisp, and distortion-free voices they’re presented with.

We measure battery life by running a custom web-script, designed to replicate the power consumption of typical real-life usage. All devices that go through the test have their displays set at 200-nit brightness.

hours Higher is better
HTC One max
7h 27 min (Average)
Sony Xperia Z Ultra
4h 52 min (Poor)


Before diving into its battery life, let’s briefly talk about the technology behind it – considering the phone is curved and all. At the center is a 3500 mAh ultra-slim curved battery, an ingenious design that employs LG Chem’s patented “stack and folding” technology, which allows it to endure stress from the handset flexing. Highly regarded as an ample size, even for a phablet, we’re somewhat perplexed by the result. Basically, its fully charged battery permits us nothing more than a single day of heavy usage – so it’s something that requires nightly charges.


Curved phones are new, right? Well, history tells us otherwise, seeing we’ve seen it done with the Google Nexus S and Samsung Galaxy Nexus. Although it’s still incorporating a curved design, the LG G Flex actually takes a totally different approach – one that’s innovative and hasn’t been seen before. Bearing that in mind, we have to applaud it for having such an arsenal of innovative design elements, like its flexible P-OLED display, ultra-thin curved battery, self-healing properties of its plastic casing, and truly flexible body. This is also the right place to give credit to LG for actually adding some true benefits along with their curved display, which is the exact opposite of what Samsung has achieved with its Galaxy Round - the other phone with flexible screen to come out this year. Simply put, while Samsung's device features a curved screen of its own, its body is still rigid, practically defeating the purpose of having a curved display, especially the way Samsung has curved it along the vertical axis.LG is also kind enough to enhance the software experience just a bit more over the G2, which already astounds us for its diverse offerings. Taking a look at the overall picture, it’s a pretty well-rounded performing smartphone that can get the job done. However, is it the best performing phablet out there? Well, we wouldn’t necessarily say so, considering the underwhelming results we get in certain categories, such as the 720p screen with subpar quality and the average camera. On top of that, we have to take into consideration its unlocked pricing, which appears to be quite high in the few areas where the handset is actually available.

Then again, having in mind the selection of unique features you're going to get with it, we do think that the LG G Flex will prove to be a lovely product if it ends up being offered by some of the bigger US carriers, at a price of up to the premium $299.99 on contract point. Whether and when this is going to happen, though, we're yet to see. Of course, if the LG G Flex does become officially available in the US, it'll have to battle proven champions, such as the Samsung Galaxy Note 3 and Nokia Lumia 1520, with the latter also having a very attractive price-tag along with the rest of its notable features.

Looking at what the LG G Flex brings to the table, it’s more of a showcase device than anything else. It’s a valiant offering that shows us what we can expect with future smartphones next year, seeing that this one is obviously opening the flood gates for everyone else.

Software version of the review unit:
Android Version: 4.2.2
Build Number: JDQ39B
Kernel Version: 3.4.0


  • Unique curve design
  • Self-healing properties
  • Very durable & resilient
  • Great Call Quality


  • Splotchy distortion with the display
  • Underwhelming still image capture quality
  • Expensive outright cost

PhoneArena Rating:


User Rating:

5 Reviews

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