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Why 2020 was the year of high refresh rates — and low battery gains

Galaxy S20 Ultra
Galaxy S20 Ultra (Image credit: Hayato Huseman / Android Central)

If there's a single feature that set the high-end phones of 2020 apart from those of the previous year, it's the arrival of fast 120Hz displays. Some of the best Android phones like Samsung's Galaxy S20 Ultra and OnePlus 8 Pro showed how pumping out an extra 60 frames every second could result in a smoother, more responsive experience.

Use a 120Hz phone for long, and it's hard to go back to 60. Devices that just a few months ago felt fast enough now make for a jarring visual experience. It's not just about a few extra frames of animation or a smoother-scrolling Twitter feed. Most fast displays also amp up the touch sampling rate to 240Hz, meaning the phone literally becomes more responsive.

Marketing 120Hz displays in 2020 was uniquely challenging.

As impressive and enjoyable as a fast display is, manufacturers faced challenges marketing the feature in 2020. This was a year when many brick-and-mortar stores have been closed or suffering from reduced footfall, with visitors less likely to want to paw at a communal demo device for fear of Covid contamination. For a feature that can't really be properly shown or experienced through an ad on your 60Hz laptop, TV or phone screen, this was less than ideal. Manufacturers like Samsung and OnePlus instead had to resort to video ads demonstrating 120Hz by showing the relative difference between 15 and 30 frames per second, which failed to really capture what makes a fast screen enjoyable to use.

What's more, this new age of phone screen smoothness comes at a cost — in terms of both price and battery consumption. In the West, 120Hz displays were limited to expensive flagship phones for much of the year. And doubling the frame rate of your phone of course means it has to do more number-crunching to output those extra frames and update the panel twice as fast.

Galaxy S20 FE vs. iPhone 12

Source: Apoorva Bhardwaj / Android Central (Image credit: Source: Apoorva Bhardwaj / Android Central)

It also didn't help that 120Hz displays became mainstream in phones around the same time as 5G — another big source of battery (and wallet) drain. The binary choice between the two, for the sake of battery life, is said to be what pushed Apple away from using 120Hz in its 5G iPhones. Other brands, like Samsung, chose to limit their phones' resolution when in 120Hz mode.

Higher refresh rates make a noticeable dent in your battery life.

One side effect of this year's 120Hz revolution has been a dearth of Android phones with long battery life. The solution, for many, was to simply leave phones like the Galaxy S20 Ultra set at 60Hz mode. For great longevity without that compromise, you needed to look at phones with 90Hz panels. Less expensive phones like the Google Pixel 5 and ASUS Zenfone 7 Pro represented the happy medium of the year, where it was still possible to enjoy a smoother experience without the added battery drain of 120Hz.

But we won't need to wait long for better battery life in 120Hz phones, nor is the technology likely to remain limited to super-high-end flagships in 2021. LTPO technology of the sort used in Samsung's Galaxy Note 20 Ultra can dynamically adjust the display's refresh rate anywhere from 120Hz all the way down to 1Hz for maximum power savings. Expect this tech to become much more common in 2021 flagships.

And there are signs that Qualcomm's Snapdragon 775 series will help bring smoother screens to mid-rangers next year, with rumors that unlike its predecessor, it'll fully support 120Hz panels.

Fast phone displays aren't going anywhere, and just as 2020 was the year they defined the flagship segment, expect 2021 to be the year the tech goes mainstream.

Alex Dobie
Alex Dobie

Alex is global Executive Editor for Android Central, and is usually found in the UK. He has been blogging since before it was called that, and currently most of his time is spent leading video for AC, which involves pointing a camera at phones and speaking words at a microphone. He would just love to hear your thoughts at alex@androidcentral.com, or on the social things at @alexdobie.

4 Comments
  • I had cell phones since the days when they were the size and weight of a brick and had pull out antennas. I amaze every few years on how the tech has grown.
  • This is just another way for Samsung et al to justify charging absurd prices. 5G is just more of the same. They are vampires that will bleed us dry if we let them.
  • Simple answer: Because battery life is already good enough to easily get through a day, which is what most people care about.
    Moving to 120HZ has a bigger impact on the user experience right now than adding a few extra hours of battery life.
  • It's all a gimmick. The difference in normal day-to-day use is negligible! Yes, a difference can be discerned but it is a non-issue when it comes to daily use like email, texting, maps, or god forbid the making of an actual phone call. It makes no difference when listening to music, or even when watching a video, or movie! It only makes a little difference when scrolling through long lists of endless drivel. I've had both...a screen capable of 90 refresh rate, and now I have the 8T capable of 120 refresh rate. I have switched numerous times in an effort to convince myself that I'm somehow missing something...NADA! I left them both on 60 and they work great! Remember a few years ago when the term "buttery smooth" was popular? Well, 60 IS buttery smooth enough! It's a battery draining gimmick for everyone except hard core gamers, and even then only if the game of choice is capable of utilizing the higher refresh rates. YMMV