In a joint event between London and New York, LG has lifted the veil on the next iteration of its high-end smartphone, the G4. The G3's designs largely borrows from the G3 and iterates on it with a new slightly curved screen and optional leather back covers. The camera seems to be LG's core focus for this device, and we'll get back on those details in just a bit.

The G4 will be the first device to officially use the Snapdragon 808, Qualcomm’s MSM8992 big.LITTLE SoC arrangement that uses two ARM A57 cores in one cluster clocked in at 1.82GHz and four ARM A53s at 1.44GHz in the other. The GPU also uses a lower end Adreno 418 clocked in at 600MHz. Qualcomm avoided LPDDR4 in the S808, and thus remaines a LPDDR3 piece likely running at up to 933MHz.

While we're not too concerned with the resulting CPU performance and loss of two big cores, and slight frequency loss of the Snapdragon 808, it's the GPU which should see higher impact as 3D performance suffers a tad compared to the Snapdragon 810's Adreno 430. In our preliminary tests with the demo device, we see GFXBench Manhattan offscreen go down from 22.7fps to 15fps and T-Rex from 49fps down to 35fps when comparing the G4 to the HTC M9, which sports a FHD screen as opposed ot the QHD one we find in the LG device.

The detailed specification lists shows the iterative improvements over the G3, launched last year:




SoC MSM8974AC Snapdragon 801
4x Krait 400 @ 2.5 GHz
MSM8992 Snapdragon 808
2xA57 @ 1.82GHz
4xA53 @ 1.44GHz
GPU Adreno 330 @ 578MHz Adreno 418 @ 600MHz
+ microSD
32GB NAND (eMMC 5.0)
+ microSD
Display 5.5-inch 2560x1440 IPS LCD 5.5-inch 2560x1440 IPS LCD
Network 2G / 3G / 4G
Qualcomm MDM9x25
UE Category 4 LTE
2G / 3G / 4G
Qualcomm X10 (Integrated)
UE Category 9 LTE
Dimensions 146.3 x 74.6 x 8.9 mm
149 grams
148.9 x 76.1 x 6.3 - 9.8 mm
155 grams
Camera 13MP rear camera, 1.12 µm pixels, 1/3.06" CMOS size,
F/2.4. 2-axis OIS

2.1MP F/2.0 FFC
16MP Sony IMX234 rear camera,
1.12µm pixels, 1/2.6" CMOS size
F/1.8, 3-axis OIS

8MP Toshiba T4KA3 FFC
Battery 3000 mAh (11.4 Wh) replaceable 3000 mAh (11.4 Wh) replaceable
OS Android 4.4.2 with LG UI Android 5.1 with LGUX 4.0
Connectivity 802.11a/b/g/n/ac + BT 4.0, USB2.0, GPS/GNSS, MHL, DLNA, NFC 802.11a/b/g/n/ac + BT 4.0
SIM Size MicroSIM NanoSIM

The screen size and resolution stay constant at 5.5" and QHD, but the device has an angular element to it, similar to the LG G Flex 2 but not as pronounced: The screen is touted to be a new generation IPS Quantum display. It looks like LG is claiming 20% gamut increase. The display has  50% increased contrast over the G3, achieving a total of 1500:1 contrast ratio. The G4 reintroduces Panel Self Refresh which was unfortunately missing from the G3, and this should vastly improve battery life over its predecessor.

The screen has a 3000mm radius curve throughout the phone's design that LG markets as "Slim Arc" design.

The phone comes in several different plastic and leather cover options. These are high-quality hand-produced genuine leather products. The plastic version sports a diamond pattern mimicking a metallic look. This also means the G4 is slightly bigger and heavier than the G3 as it comes at a increased 155g. The removable battery of the G4 remains similar to the G3 at 3000 mAh, and the SIM moves to the nano-size. The microSD slot remains an option for the G4.

The G4 gets a camera update, moving from a 13MP to a 16MP design that migrates from an F/2.4 to F/1.8, allowing for potentially better performance. We find a Sony IMX234 sensor, a unit we haven't yet seen used in any other devices. LG were keen to point the F/1.8 over Samsung’s F/1.9 on the latest Galaxy S6. The new OIS system dubbed "OIS 2.0" now offers a 3-axis gyroscope instead of the traditional 2-axis implementations in all current OIS devices. Another first is the implementation of a colour spectrum sensor next to the flash unit, and is able to read RGB and infrared light. LG is able to vastly improve white-balance and also increase clarity for more natural pictures.

The phone now also offers full manual control, with customizable ISO, exposure, shutter speed and white balance among other things. RAW format capture is also supported. Double clicking on the rear buttons already takes a picture within a second, LG is here taking another stab at Samsung's S6 as it only is able to open the camera app in the same time.

The front camera has been boosted to a 8MP Toshiba T4KA3 sensor and sports an improved gesture shot triggering function.

The volume rocker on the rear changes slightly, moving to a flatter central piece. The flash element of the camera in this area is a dual LED design, and we also find the microphone grille at the bottom. One of the elements LG seems to be pushing with the G4 is the design of the back cover, allowing for a replaceable leather rear while retaining the front facia that exhibits a faux carbon-fibre effect of sorts.

The device should be available this week in major markets. We’re currently waiting in line to get some hands-on time with the device, and hopefully on the list to get a sample to follow up from the LG G3 review.

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  • extide - Tuesday, April 28, 2015 - link

    On another note, holy COW, looks like LG went ALL OUT with advertising, lol, every single banner location on this site is an ad for the LG G4 right now!!
  • toyotabedzrock - Tuesday, April 28, 2015 - link

    I really hope Google doesn't make the next Nexus a curved phone. And I hope they wait for the 820 to be out.

    This phone looks more like a way to ruin a well liked line of LG phones. The slow g2 updates and now some CEO thinks a curved phone is a good way to be different when really its a good way to be difficult.
  • tipoo - Tuesday, April 28, 2015 - link

    Any word on if the S808 throttles nearly as much as the 810? Two A57s and four A53s sounds fine by me, in fact I wonder about the benefit of so many low power cores. I wonder if two and two wouldn't be nearly as good.

    And how big is the downgrade from the Adreno 430 to the 418?
  • tipoo - Tuesday, April 28, 2015 - link

    Ah, see it now. "In our preliminary tests with the demo device, we see GFXBench Manhattan offscreen go down from 22.7fps to 15fps and T-Rex from 49fps down to 35fps when comparing the G4 to the HTC M9, which sports a FHD screen as opposed to the QHD one we find in the LG device."

    Pretty big drop.
  • MrSpadge - Tuesday, April 28, 2015 - link

    At QHD the phone is pushing 1.78 times as many pixels as under FHD. From this alone you'd expect a performance drop from 22.7 to 12.8 fps and from 49 to 27.6 fps. that's a rough approximation - but still, it's clearly not performing badly. If you want high fps on a phone a simple resolution reduction would be far more efficient than a bigger GPU. The difference might not even be visible at these crazy high pixel densities.
  • tipoo - Tuesday, April 28, 2015 - link

    Offscreen. Panel res doesn't matter in offscreen tests.
  • mczak - Wednesday, April 29, 2015 - link

    This is true though don't forget the S810 (at least in a phone) will drop scores by ~40% after a couple of minutes. Presumably the S808 should throttle less given similar thermal/power constraints.
  • phoenix_rizzen - Wednesday, April 29, 2015 - link

    The more important question is how does it compare to the G3, which uses an older GPU and the same QHD resolution?
  • phoenix_rizzen - Monday, May 4, 2015 - link

    Ars Technica did an article that showed just how badly the S810 throttles in the HTC M9 and LG G Flex 2, compared to the Exynos 7420 in the Galaxy S6.

    They just did a follow-up showing the S808. It manages to stay much closer to the max CPU freq, and rarely touches the LITTLE cores during the testing. While the max frequency is lower, the overall performance should be equal or better than the S810 due to better thermals.
  • watzupken - Tuesday, April 28, 2015 - link

    Expecting performance of this phone to be average with the Snapdragon 808. But at the end, if the actual production unit can run smoothly and have a decent battery life, I think that is great for me. Honestly, not many apps can utilized all the cores in a quad/octa core chip. These from my opinion are more for marketing rather than practical usage.

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