A phone running at 120Hz can use more battery than it does at 60Hz, but the difference depends on the screen, software and what you are doing. Adaptive modes can lower the refresh rate when a high rate is unnecessary, so a 120Hz setting does not mean the screen runs at 120Hz all the time.
If your phone lasts comfortably through the day, keeping its adaptive setting may be worthwhile for smoother scrolling. If you need more time between charges, try the 60Hz or standard setting and compare your own results.
What does 120Hz mean?
Refresh rate describes how often a display updates each second. At 60Hz, the screen can refresh up to 60 times per second. At 120Hz, it can refresh up to 120 times. The higher rate can make scrolling and supported animations look smoother.
Refresh rate is different from frame rate, which describes how many frames an app or game produces. A 120Hz screen cannot make a game render 120 frames per second if that game or phone does not support it. Our TV guide on refresh rates for PS5 and PC gaming explains the same difference for big screens.
Why can 120Hz use more battery?
Refreshing a display more often can require additional power. The graphics processor and other components may also work harder when an app produces more frames. The actual difference varies with the panel, brightness, workload and device settings.
Samsung says a higher refresh rate requires more battery power. Its Adaptive option adjusts the rate up to 120Hz, while Standard uses 60Hz in normal situations to conserve power. Only some models support 120Hz, and availability can vary by app.
A maximum rate on a specification sheet is not proof that every app runs at that rate. Manufacturers can use different rules for games, video, static images and battery-saving modes.
How much battery life can you save?
There is no reliable percentage that applies to every phone. In one Tom’s Guide test of the Samsung Galaxy S26 Ultra, the phone lasted 16 hours and 10 minutes with adaptive refresh and 16 hours and 40 minutes in standard mode, with its Privacy Display off. The publication used 5G web browsing at 150 nits.
That half-hour difference belongs to that phone and test. It is not a guarantee for your device, and TechPipino did not perform the measurement. Your screen brightness, signal strength, apps, battery condition and usage can change the result.
What about adaptive refresh rates?
An adaptive mode changes the refresh rate within the range supported by the device and its software. For example, it may use a higher rate while you scroll and a lower rate when the picture is static. The available rates and behavior vary between phones.
Some screens use LTPO technology to support variable refresh rates, but the exact range and switching behavior depend on the model. A phone advertised with a 120Hz display may offer different options from another 120Hz phone.
How to compare 60Hz and 120Hz on your phone
- Find refresh-rate or motion-smoothness options under Display settings. The name and available choices vary.
- Use your usual brightness, connection and apps for a day or two with adaptive or high refresh enabled.
- Repeat with standard or 60Hz under similar conditions.
- Compare screen-on time and battery use in your phone’s battery settings. Note major differences in signal, gaming, camera use and time away from a charger.
- Choose the setting that balances smoothness and endurance for you. This informal comparison is not a laboratory test.
On supported Samsung Galaxy phones, the route is Settings > Display > Motion smoothness. Menus and options can differ by model and software version.
If battery life remains poor in either mode, check battery health, brightness, background activity and signal before deciding to replace the phone. Our phone upgrade guide covers repair and replacement considerations.
Frequently asked questions
Is 120Hz always better than 60Hz?
No. It can look smoother in supported interactions, while 60Hz may help conserve power. Your preference and battery needs matter.
Does adaptive 120Hz always run at 120Hz?
No. Adaptive modes can adjust the rate according to the device and activity. The exact behavior varies.
Does switching to 60Hz damage the screen?
Changing an available display setting does not inherently damage the screen. You can switch back if the smoother setting suits you better.
Takeaway
A higher refresh rate can cost battery life, but the size of the trade-off is device- and usage-dependent. Test your phone under similar conditions and use the mode that suits your day.
