LG G8X battery life test: shockingly good!

LG G8X battery life test: shockingly good!
The LG G8X in itself might not be the most revolutionary phone, but it does come with a dual-screen accessory that turns it into an interesting alternative to foldable phones without any of the problems and fragility of foldable phones (and also without those outrageous prices).

But even on its own, the LG G8X is a decent flagship phone that also comes with a large, 4,000mAh battery and we were curious to see how long it lasts. Especially after using it for a while, we noticed that it lasted surprisingly long.

To check the exact numbers, we put the LG G8X through a number of tests: we separately test the browsing time, the YouTube video streaming time, and last but not least, 3D gaming.

Let's take a look at the results.

Test #1: Browsing Time

For this test, we run the same set of web pages on different phones and we make sure that all phones are set at the same level of brightness to equal the playing field.

The LG G8X finished this test after nearly 11 hours, a very good showing that is close to the very best flagships on the market, the iPhone 11 Pro Max and the Galaxy Note 10+. It also outlasted the Galaxy S10+ in this test. Take a look at the results right below:

Test #2: YouTube Video Streaming

The next test is one that many people will care about: YouTube video streaming. We have the same playlist with videos playing in the same order on all phones, and we measure the time it takes for the test to drain the battery completely.

And lo and behold, the LG G8X delivers a surprise: with a runtime of 11 hours and 10 minutes, it was the longest lasting phone in this test. We were surprised by the results and we ran the test a couple of times to ensure the results are correct, and the phone finished within that range a couple of times. This makes the LG the longest lasting phone for YouTube video playback, with a 2-hour advantage over the iPhone 11 Pro Max and the Galaxy S10+.

Test #3: 3D Gaming

Next up, 3D gaming. This test shows you how much your phone will last if you play intense 3D games like Fortnite, Minecraft, Asphalt or the like.

Here again, the G8X shows up at the top of the charts. This is really surprising: LG was never quite a leader in terms of battery life, but the G8X stays cool in this test and runs a looong time, outlasting phones with praised battery life.

Here are the actual scores:

Total Use Time

At the end of the day, we also look at a total use time score that should give you a rough idea about how long you can expect your phone to last. To calculate this score, we use 2 parts browsing, two parts YouTube video streaming, and one part 3D gaming (since most people don't play games that often).

The LG G8X got a total score of 10 hours and 28 minutes, a record showing that beats all other flagship phones that we have tested in 2019.

Yes, those battery numbers will drop if you use the phone with the dual screen accessory, but if you just use the phone on its own, it's an absolute stellar performer, even when compared to the iPhone 11 Pro Max, Galaxy Note 10+ and the Galaxy S10+.

Related phones

G8X ThinQ
  • Display 6.4" 1080 x 2340 pixels
  • Camera 12 MP / 32 MP front
  • Processor Qualcomm Snapdragon 855, Octa-core, 2840 MHz
  • Storage 128 GB + microSDXC
  • Battery 4000 mAh(20h talk time)



1. OneLove123

Posts: 1233; Member since: Aug 28, 2018

Getting two fro free from at&t. :)

2. User123456789

Posts: 1069; Member since: Feb 22, 2019

1080p and barely,did better than Note10+

3. torr310

Posts: 1686; Member since: Oct 27, 2011

But it provides the battery life everyone desires.

5. OneLove123

Posts: 1233; Member since: Aug 28, 2018

It did better than all the phones. I can't believe it has an amazing battery life.

4. shield

Posts: 858; Member since: Sep 12, 2015

Nice LG bravo!!

6. redmd

Posts: 1947; Member since: Oct 26, 2011

Amazing! LG needs a comeback.

7. Sategi

Posts: 7; Member since: Feb 06, 2019

LG si so underrated , i had G7 and was great for fraction of the flagship price .

8. Venom

Posts: 3764; Member since: Dec 14, 2017

Wait, so the GX isn't a folding phone and the other thing is just a glorified accessory?

9. Zappo

Posts: 16; Member since: Oct 04, 2016

Great! I've had nothing but pleasant experiences with my LG phones apart from battery life. They were the Nexus 4, the G2 (perfect phone, good battery, ahh, fond memories) and the G6. I really hope LG will recover!

10. Blogietis

Posts: 3; Member since: Apr 27, 2016

I am waiting for the release of this device, besides the lack of 5G which for a while still will not be a real factor, it is a legit full package, great job by LG, now let's just hope that the software updates will not come as slow as usually does for LG phones

11. shawman

Posts: 74; Member since: Sep 18, 2012

I am impressed. This was their Achilles heel and they have done awesome. I have S10 but I hate its battery life especially its standby battery life. I hope Samsung does something spectacular with S11(I am hoping for graphene battery). To me battery life is among the most important aspects of the phone.

12. yalokiy

Posts: 1066; Member since: Aug 01, 2016

Glad they fixed the battery life. But where is the third camera everybody else has in 2019? Where is Android 10 that it should have been released with?

13. rsiders

Posts: 1986; Member since: Nov 17, 2011

Well this a very welcomed benefit for those not really interested in the flip screen accessory. Good job LG.
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