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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  • phoenix_rizzen - Wednesday, April 29, 2015 - link

    Note: qHD is 960x540; QHD is 2560x1440. Very big difference. :)

    The GPU in the G4 is improved over the G3 (Adreno 418 vs Adreno 330), while the screen resolution remained the same. Thus, GPU performance should be much improved compared to the G3.

    Unlike the G2, the G3 does't have PSR; the G4 does. Between that and the improved efficiency of the LCD itself, battery life should be better in the G4.

    While the G4 only looks like a marginal improvement to the G3, performance should be better. And it's a great improvement over the G2. Considering people tend to have 2-year contracts, the G4 will be a decent upgrade for G2 users.
  • Azurael - Wednesday, April 29, 2015 - link

    Not for me, it won't!
  • Azurael - Thursday, April 30, 2015 - link

    Still, there's always the LTE-A version of the G3 for anybody who wants an LG phone with decent performance. I'm assuming they won't release the G4 as its 'replacement' in S. Korea, since it's slower!
  • phoenix_rizzen - Thursday, April 30, 2015 - link

    Huh, didn't know there were two hardware versions of the G3. Thanks for the pointer.

    That would be an interesting benchmarking session:

    LG G3 (using Snapdragon S801 SoC)
    LG G3 LTE-A (using Snapdragon S805 SoC)
    LG G4 (using Snapdragon S808 SoC)

    The screen resolution is the same, the amount of RAM is the same, virtually everything is the same except the CPU and GPU cores used. With a bit of finaggling, one could probably even get the same version of LG Android onto each phone.

    That would really showcase the performance of each SoC in relation to each other.
  • SanX - Wednesday, April 29, 2015 - link

    Front speakers and 6" screen and i may buy. Otherwise twice cheaper almost same spec chinese phones (without cool sounding but useless spectrum analyzer specifically in IR up to 5 microns (!!!)) is the way to go.
  • SanX - Wednesday, April 29, 2015 - link

    Also why the heck they confuse people with F1.8 and 40+% more light then F1.9 of competitor? Someone should sue them since F stop has nothing to do with more or less light since the focal length is not fixed for all companies. Only one major parameter - the lens diameter of entrance (in real millimeters) gives you more or less light. Others are number of lens surfaces and their reflective quality.
  • Vaibhav Sharma - Wednesday, April 29, 2015 - link

    And the early benches are out for g4 oon gsmarena, and from the looks of it will be again the least powerful flagship like last year.
  • SydneyBlue120d - Wednesday, April 29, 2015 - link

    Are You sure the camera is Sony ? I'm reading elsewehere that it is LG Innotek, can You clarify? Thanks a lot.
  • bigi - Wednesday, April 29, 2015 - link

    90% of buyers don't give a frack about its chips inside. The leather options are great.

    I've seen sample pictures from G4 and now finally it rivals crappy PS digicams.

    I am getting it.
  • Ashinjuka - Wednesday, April 29, 2015 - link

    Am I alone in thinking: I'm not buying any next phone with a camera bump?

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