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LG G3 vs Samsung Galaxy S5 comparison review: LG and Samsung flagship smartphones go head to head

£479 inc VAT

Manufacturer: LG Mobile

LG yesterday unveiled its G3 smartphone, a high-end Android phone with a Quad HD screen and some impressive hardware. Here we compare the LG G3 to Samsung's flagship Galaxy, the S5, to see which is the best smartphone.

LG G3 vs Samsung Galaxy S5

Here at PCA we are big fans of the LG G2, naming it 'the best smartphone you can buy', giving it our prestigious Gold Award, and allowing it to sit undisturbed at the top of our best smartphones chart for the best part of a year. It's safe to say the G3 had a lot to live up to. Meanwhile, Samsung has such a huge worldwide following it could slap a Galaxy label on a sausage and people would buy it. But does the tech giant have anything to fear when its flagship Galaxy S5 goes head to head with the brand-new Quad HD LG G3? We compare the specs to find out. Also see: LG G2 vs LG G3 comparison review and Best Android phone 2014 - LG vs Samsung vs Sony vs HTC vs OnePlus. 

LG G3 vs Samsung Galaxy S5: Price and UK availability 

Announced at MWC in February, Samsung's Galaxy S5 has been available for a few months now and is already available more than £100 below its £599 RRP SIM-free. The LG G3 was unveiled only last night, and it's unlikely to go onsale before the end of June. LG hasn't yet confirmed UK pricing, but Clove lists the G3 at £499. So, there's a difference of just £4 between S5 and G3, although we expect the Galaxy S5 will come down still further in price by the time the LG goes on sale. Read more about the S5 and G3 in our Samsung Galaxy S5 review and LG G3 review 

SIM-free prices are less relevant when you buy a smartphone on a contract, and it's too early to see what monthly charges UK mobile operators will command. However, if you have the cash to buy the Samsung Galaxy S5 or LG G3 upfront, you can save yourself a considerable amount of money over the life of your contract. We've compared the best SIM-only deals to help you get the Samsung Galaxy S5 or LG G3 at the best price. Those interested in the S5 should also check out our Best Samsung Galaxy S5 deals UK article. 

LG G3

LG G3 vs Samsung Galaxy S5: Design and build 

Both these handsets are plastic, yet LG has applied a metal-effect skin to the G3's rear for a touch of class, while Samsung has plumped for a perforated texture that supposedly feels more natural and aids grip in the hand. Neither are as nice in design as, for example, the metal-clad HTC One M8, but both are sufficiently stylish for high-end smartphones. The rear covers on each phone are removable, allowing you to access the also removable battery and microSDXC slot. Chances are, of course, that you'll want to protect your device with a case - check out the best cases and covers for the Samsung Galaxy S5 under £20. 

The screen is a key difference between this pair, and LG really knows what it's doing in this department. It's managed to squeeze a 5.5in screen into a chassis barely larger than that of the S5, which has a smaller 5.1in screen. The LG G3 measures 146.3x74.6x8.9mm, whereas the Samsung Galaxy S5 is 142x72.5x8.1mm. The LG G3 is also only slightly heavier, at 149g versus the Samsung's 145g. 

Samsung Galaxy S5

While buttons for power and volume are found on the S5's sides, LG places them on the back of the handset. This seems odd at first, but you quickly get used to it - and KnockCode means you don't need the power button to turn on and off the screen, you just tap the G3's display. On the S5 you'll also find a fingerprint sensor built into the Home button, plus a heart-rate sensor. 

Samsung has added IP67-certified dust- and water protection to the S5, allowing it to be submersed in water with no ill effects. You do need to be extra careful that the rear cover and microUSB port cover are securely in place, however. Check out our video of the S5 taking a bath below.

Both handsets are available in black, white and gold; the LG G3 will also come in burgundy red and violet, while the S5 comes in electric blue. 

LG G3 vs Samsung Galaxy S5: Display 

LG shows Samsung who's boss when it comes to the display. Not only is the G3's screen larger than that of the S5, at 5.5in versus 5.1in, and without the handset size becoming unwieldy, the resolution is also Quad- rather than full-HD. Indeed, the LG G3 has a staggeringly high pixel density of 534ppi against Samsung's 432ppi, making it the ultimate phone on which to watch video, view photos and play games. This really is a stunning screen. 

The LG employs IPS panel technology, whereas Samsung uses Super AMOLED. Both handsets have very good viewing angles, with the Samsung offering vivid colours that pop and very good contrast, and the G3 majoring on a crystal-clear, true-to-life quality. 

LG G3

Samsung's screen also uses Smart stay software to prevent the screen switching off when you're looking at it, while the default Adapt display automatically adjusts elements such as colour gamut, white tone and contrast depending on the amount of available light. We found the S5's screen is more easily readable outdoors than most, and it's simple to quickly alter the brightness setting in the notification bar. 

LG G3 vs Samsung Galaxy S5: Hardware and performance 

The LG G3 is available in 16- and 32GB models with a slightly different spec. The 16GB model matches the spec of the Samsung Galaxy S5, with a 2.5GHz Qualcomm Snapdragon 801 processor, 2GB of RAM and Adreno 330 graphics. The 32GB G3 has 3GB of RAM. Samsung's S5 is reported to also be available in a version that has 32GB of storage, while both handsets employ support for microSDXC, allowing you to add an extra 128GB of storage.

  

We haven't been able to run the LG G3 through our usual benchmarks just yet - and in any case remain wary of the fact some manufacturers employ benchmark-boosting software - but its performance should be more or less in line with that of the S5.  

We measure performance using Geekbench 3.0, SunSpider and GFXBench 3.0. In Geekbench the S5 scored 926 points in the single-core test, falling behind the HTC One M8 and Sony Xperia Z2, but led the pack in the multi-core component with 2,869 points. In SunSpider the Galaxy S5 recorded 824ms, and in GFXBench we saw 28fps in T-Rex and 12fps in Manhattan. You can compare these scores to all the smartphones we've recently tested in our article What's the fastest smartphone 2014: processor, graphics and web performance compared.

Samsung Galaxy S5  

LG G3 vs Samsung Galaxy S5: Audio 

The G2 pleased audiophiles as the first smartphone to come with 24bit/192kHz audio playback, to which LG has now added a 1W speaker with a boost amp to improve sound quality. Unfortunately, the G3's speaker is rear-facing. 

The Galaxy S5 might not support high-res audio, but sound quality is acceptable. Plus Samsung has several software tricks up its sleeve when it comes to audio, including SoundAlive EQ presets, Smart volume (which keeps the volume consistent across tracks), and Adapt sound (which tunes the EQ to the performance of your headphones). 

LG G3 

LG G3 vs Samsung Galaxy S5: Cameras 

Whereas the Samsung Galaxy S5 packs a 16Mp rear-facing camera, LG doesn't at first appear to have moved on from last year's 13Mp snapper. In fact it has made a few tweaks here. 

Both Samsung and LG claim to have super-fast autofocus capabilities that can take a photo in around a quarter of a second - faster than you can blink, says LG. However, we found the S5's Camera app can take a couple of seconds to launch, which can mean you still miss that crucial shot.

Samsung Galaxy S5 

Regardless, Samsung has once again tweaked the software to offer a few extra bells and whistles. We like the ability to alter the focus point after a photo has been captured, for example. 

Photos shot on the Samsung Galaxy S5, as you can see below, are generally nice and sharp, and among the best we've seen from a smartphone, although we did get a few blurry shots. This is something LG hopes to prevent with its advanced optical image stabilisation and Touch & Shoot mode, but we'll be able to see whether these are successful once we've spent some more time with its camera. 

Samsung Galaxy S5 camera test - St Pancras

The Samsung Galaxy S5 and LG G3 are both able to record 4K-resolution video using their rear cameras, while full-HD video is available from the S5's 2Mp and G3's 2.1Mp front cameras. The G3's front camera is also primed for selfies, with larger pixels and an improved angle, while the screen is able to act as a makeshift flash and a hand gesture can trigger an auto timer. 

LG G3 vs Samsung Galaxy S5: Connectivity 

Whether you choose the LG or Samsung, your phone will come with the latest in connectivity tech. That means 4G LTE (LTE Advanced with the G3), Bluetooth 4.0, GPS, NFC and dual-band 802.11ac Wi-Fi. Samsung also specifies MIMO technology and offers a unique Download Booster that combines the power of 4G LTE and 802.11ac Wi-Fi to deliver downloads at a theoretical max of 400Mb/s. 

LG G3 vs Samsung Galaxy S5: Software 

Samsung and LG are known for cramming in a lot of software into their smartphones, and not much has changed in this regard with these two Android 4.4 KitKat smartphones. 

LG has cleaned up its interface somewhat, colour-coding apps and removing unneccessary visual elements. It also includes such features as KnockCode, with which you can create a custom knocking pattern to wake and unlock the screen, and Smart Notice, which is very much like Google Now, suggesting you switch on Wi-Fi when you get to the office or call back someone from whom you have a missed call, for example. There's also a new smart keyboard with which you can adjust the size and use gestures to type more quickly and with fewer errors.

LG G3 

Samsung, meanwhile, is often accused of being the king of bloatware, but only Dropbox and Flipboard are preloaded alongside its own and Google's apps. Plus, while some features are decidedly gimmicky others can be very useful. To go along side its heart-rate monitor is the S Health app, for example. Samsung has also cleaned up its interface, with round icons in the notification bar and settings menu. Its Magazine interface offers a personalised feed from news and social media to the left of the main home screen, and Samsung has also added to the S5 a PIN-controlled Kids' mode and a Private mode for storing personal content.

Samsung Galaxy S5 

LG G3 vs Samsung Galaxy S5: Battery life 

Although the LG G3 has a larger-capacity 3,000mAh battery than the Samsung's 2,800mAh cell, it also has a larger, higher-resolution screen that you can expect to quickly drain the battery. However, LG claims it has tackled this issue on three fronts: through adaptive framerates, adaptive clocking and adaptive timing control. We won't know until we've spent some more time with the G3 whether LG has been able to sidestep the screen issue in this manner, but we are pleased to find the LG G3 supports wireless charging, and that its battery is removable - if you wanted, you could carry a spare.

Samsung Galaxy S5 

Samsung's battery is also a removable component, giving these two phones an advantage over the competition. We found the Samsung Galaxy S5 would have around two thirds of its battery capacity remaining at the end of a full working day, so should last most users two days. 

The S5 also has an Ultra Power Saving mode, which eeks out every bit of life (up to 24 hours) from the last 10 percent of juice by turning off all unneccessary functions and using a greyscale display.

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LG G3 Expert Verdict »

LG G3 Scores 8.7 out of 10 based on 81 reviews
Android 4.4.2 KitKat OS
5.52in IPS LCD display (1440x2560), 534 ppi
2.5GHz Quad-Core Qualcomm Snapdragon 801 CPU
Adreno 330 GPU
2/3GB RAM (storage dependant)
16/32GB internal storage
13Mp rear camera laser AF with dual-tone LED Flash
2Mp front camera
Video recording at up to 4K
24bit/192kHz audio
Wi-Fi 802.11a/b/g/n/ac
Bluetooth 4.0 LE
NFC
Infrared
A-GPS
HSDPA, 42 Mbps
HSUPA, 21 Mbps
4G LTE (Cat 4)
Micro-SIM
11.1Wh (3000mAh) battery
75x146x8.9mm
149g

We'd happily own either of these two similarly specified smartphones, but with just a few pounds between them the LG G3 looks to be the more impressive device. Whereas the S5 offers a fingerprint reader and heart-rate sensor, the G3 boasts a larger, significantly higher-resolution Quad HD display that is quite simply beautiful, plus support for high-resolution audio. We'd much rather watch video, view photos and play games on the G3, which should be every bit as fast as the Galaxy S5.


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