Modern smartphones have turned into powerful multimedia centers, where the smooth operation of the interface plays a decisive role. Users are increasingly paying attention not only to display resolution, but also to refresh ratemeasured in hertz (Hz). The standard 60Hz that dominated the market for years is giving way to more advanced panels that support 90Hz, 120Hz and even 144Hz. However, many device owners who bought a high-potential phone do not know how to activate this feature or change it to suit their needs.
Changing the Hertz is not just a cosmetic setting that affects the appearance of animations. This is a direct way to control the balance between visual comfort and battery life. In this article we will look in detail at how to find hidden settings, use engineering menus and use specialized utilities to control your display.
It is worth remembering that the ability to change the frequency directly depends on hardware your smartphone and the version of the manufacturer's shell. Some companies block mode switching, leaving the user with only automatic selection, while others provide full control. Understanding these nuances will help you avoid mistakes and configure the device correctly.
What is the screen refresh rate and why change it
The screen refresh rate (Refresh Rate) shows how many times in one second the image on the display is redrawn. In simple terms, with the value 60 Hz the picture is updated 60 times per second, and with 120 Hz —120 times. The higher this indicator, the smoother the scrolling of the feed on social networks, transitions between menus and animations of opening applications look.
For the average user, the difference between 60 and 90 Hz is immediately noticeable, but the transition to 120 Hz opens up a completely new level of tactile response. Gamers especially appreciate high Hertz, as it reduces input lag and makes the movement of objects in shooters or racing games more clear. However, this smoothness comes at the cost of battery life and processor power.
In some scenarios, lowering the Hertz can be useful. For example, when reading text or viewing static images, a high refresh rate is excessive and only drains battery power. The ability to manually switch modes allows you to adapt your smartphone to a specific task, saving energy without losing comfort in critical moments.
- 🚀 High Hertz ensures maximum smoothness of the interface and animations.
- 🔋 Reducing the frequency to 60 Hz significantly increases battery life.
- 🎮 For dynamic games, values of 90 Hz and higher are critical to reduce latency.
⚠️ Attention: Forcing the maximum frequency on devices with a weak processor can lead to overheating of the case and throttling (reduced performance).
Technical characteristics of displays and available operating modes may vary depending on the specific smartphone model and version firmware. Always check the official specifications of your device before making changes to the system settings.
Standard settings in the Android interface
Most modern mid- and high-end smartphones have a built-in refresh rate switch in the settings menu. Manufacturers often hide this option in sections related to the display, but the logic of the arrangement of elements may differ depending on the shell (MIUI, OneUI, ColorOS and others). Finding this option is usually not difficult if you know where to look.
In pure Android, the path to the settings looks the most logical and transparent. You need to go to the menu Settings, select the section Screen, and then find the item Advanced or immediately see the option Screen refresh rate. Here the system usually offers a choice between “Standard” (60 Hz) and “High” (90/120 Hz), or the “Automatic” mode, which itself adjusts the hertz to the content on the screen.
Owners of devices from Xiaomi or Samsung may encounter a more complex menu structure. For example, in the OneUI shell from Samsung, the setting is located along the path Settings → Display → Smoothness. There is often an explanation here that the high mode consumes more energy. It's important to note that some apps may force the frequency to drop to 60 Hz if they are not optimized for high values, regardless of your settings.
If there is no explicit switch in your menu, the manufacturer may have blocked this function or implemented it only through use cases. In this case, it is worth checking the section Games or Game Launcher, where you can set individual performance and frame rate parameters for specific applications.
Activating hidden modes through the developer menu
When standard settings are not enough or the interface does not provide a choice, The developer menu comes to the rescue. This is a hidden section of the system designed for debugging applications, but containing many useful tweaks for advanced users. Activating this menu is the first step to gaining full control over the display.
To unlock access, go to Settings → About phone and find the item Build number. Click on it quickly 7 times in a row. The system will ask for your password or pattern, after which a notification will appear indicating that you have become a developer. Now a new item will appear in the main settings - For developers.
You need to be extremely careful inside this section. Changing unfamiliar parameters may cause system instability. We are interested in an item that may be called Minimum width (although it is more about DPI) or specific graphics settings. However, most often, direct change of hertz here is not available without root access, but you can find settings that affect the animation speed, which visually simulates a high refresh rate.
☑️ Preparing to work with the developer menu
There is a myth that there is a hidden slider in the developer menu Hertz on all phones. This is wrong. On stock versions of Android, you can see information about the current frequency in the data-i="91">section or through GPU debugging, but you can’t change it systemically through this menu on all devices. Real intervention often requires third-party tools. Running services or through GPU debugging, but you can’t change it systemically through this menu on all devices. Real intervention often requires third-party tools.
⚠️ Warning: Never change settings in the developer menu at random. Resetting to default values is possible, but some experiments may lead to a cyclic reboot of the device.
Using ADB to force changes to settings
For those who are ready to go beyond standard interfaces, there is a powerful Android debugging tool - ADB (Android Debug Bridge). This method allows you to send commands directly to the system, bypassing the graphical shell. With it, you can try to change global display settings that are hidden from the average user.
Before you start, you will need a computer with ADB drivers installed and USB debugging enabled on your smartphone. Connect the device with a cable and check the connection with the command adb devices. If the device appears in the list, you can proceed to enter commands. Please note that not all smartphones support changing the frequency via ADB without root access.
The command for changing the refresh rate is as follows:
adb shell wm size 1080x2400 && adb shell wm density 440However, a more specific command for Hertz (if supported by the device kernel) may look like this:
adb shell settings put system peak_refresh_rate 120.0Where 120.0 — desired value in hertz. You can also set the minimum frequency for adaptive screens:
adb shell settings put system min_refresh_rate 60.0It is important to understand that these commands do not work on all processors. Devices based on Snapdragon are often more tolerant of such interference than models based on MediaTek or Exynos. If after entering the command and rebooting the changes are not applied, it means that the manufacturer has hard-coded restrictions at the display driver level.
What to do if ADB does not see the phone?
Make sure that the universal Google USB Driver is installed on your computer. Try changing the USB cable to the original one and switching the port. On the phone screen when connecting, be sure to confirm permission to debug from this computer.
Third-party applications and Root access
If methods without obtaining superuser rights do not produce results, the only option is to root the device. Availability root access removes all software restrictions, allowing you to edit system display configuration files. However, this process voids the warranty and carries security risks.
There are specialized applications, such as SetEdit or Refresh Rate Changerthat require root access to operate. They allow you to directly edit the Android settings database (settings.db). The table below shows the key parameters that such utilities usually change.
| System parameter | Description | Example value |
|---|---|---|
| peak_refresh_rate | Maximum refresh rate | 120.0 |
| min_refresh_rate | Minimum frequency (for LTPO screens) | 10.0 |
| user_refresh_rate | Custom mode selection | 0 (Auto), 1 (60Hz), 2 (High) |
In addition to editing settings, root users can install custom kernels (Custom Kernels). Developers of such kernels often unlock all frequencies supported by the screen, even those that the manufacturer has hidden. This is the most reliable way to get the most out of hardware, but requires high qualifications.
Before obtaining root access, be sure to unlock the Bootloader. Please note that this procedure will completely delete all data from the phone, so make a complete backup of important information in advance.
It is worth noting that using third-party applications from the Google Play store without root access is often an imitation of vigorous activity. They can only change settings within the application itself or apply filters, but are not able to change the physical frequency of the matrix without system access.
The influence of Hertz on autonomy and heating
The main compromise when choosing a high refresh rate is power consumption. The display is one of the most power-hungry components of a smartphone. Increasing frames per second requires more processing power from the graphics accelerator (GPU) and processor, which directly impacts battery drain.
Tests show that moving from 60Hz to 120Hz can reduce screen time by 15-20% depending on brightness and content type. This is especially noticeable in games and when actively scrolling web pages. Modern technologies, such as LTPO (Low-Temperature Polycrystalline Oxide)allow the screen to dynamically change the frequency from 1 Hz to 120 Hz, minimizing this damage.
The second important aspect is heat dissipation. When constantly operating at maximum frequency, the smartphone can become noticeably hotter. In hot weather or when using heavy applications, this may cause the protection to activate and reduce screen brightness or processor clock speed. Therefore, in the summer or when the battery charge is low, it makes sense to manually reduce the Hertz.
- 🌡 High frequency increases the load on the GPU, causing additional heating of the case.
- ⚡ Adaptive screens (LTPO) save up to 30% energy compared to a fixed 120 Hz.
- 📉 When the battery charge is less than 20%, many phones automatically reset the Hertz to 60 Hz.
⚠️ Attention: If you notice that the phone began to discharge quickly and get very hot in the upper part of the body after changing the screen settings, immediately return the standard refresh rate values.
Optimal The solution for most users is the "Automatic" mode, which balances between smoothness and energy efficiency, increasing the speed only when it is really needed.
Questions and answers (FAQ)
Why did the option to select 120 Hz disappear after the Android update?
Manufacturers often release updates that change display logic. In new firmware versions, the manual selection option may be replaced exclusively with an "Automatic" mode to optimize the battery. It is also possible that the update reset the developer settings or revealed hardware incompatibility.
Does high Hertz affect the quality of video shooting?
No, the screen refresh rate does not directly affect the camera matrix. However, if the processor overheats due to the screen running at 120 Hz while shooting, the system may reduce video quality or limit the recording frame rate (FPS) to prevent the device from turning off.
Is it possible to set 144 Hz on a screen that only supports 120 Hz?
No, this is not possible in software. The physical properties of the matrix limit the maximum refresh rate. Trying to set the value above the hardware limit through ADB or Root will either not work or will result in a black screen and the need to reset the settings.
How to check the real refresh rate right now?
You can enable the "Show refresh rate" option in the developer menu (if it is available on your model). There are also applications like "Device Info HW" or "FPS Counter" that display the current FPS and display Hertz in real time.
Is it safe to use applications for changing Hertz from the Play Market?
Most of these applications without root access is useless or contain advertising. They do not have access to system display drivers. It is safer to use built-in settings or ADB methods than to install dubious software that can collect your data.