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.

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.

Test #2: YouTube Video Streaming

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

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.