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What are the advantages of 120Hz screens on TVs and smartphones?

The race of manufacturers for more powerful specifications with each generation could not leave the screens out and many smartphones launched in 2020 have screens with a refresh rate of 120Hz, such as the Galaxy S20 Ultra, Galaxy Note 20 Ultra and Rog Phone II, item which until recently was more common on TVs and mainly monitors. But what does a 120Hz screen mean and what improvements does this technology add to the quality of images? Discover in this text the advantages and disadvantages of 120Hz screens.

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What is the refresh rate?

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<figcaption>Comparison between frequency at 60 Hz and 120 Hz</figcaption></figure>
<p>Numbers like 60Hz, 120Hz and 240hz refer to the refresh rate of device screens or the number of times per second that an image is updated on the screen. The best example is the basic concept of cinema, static images displayed consecutively, with the speed of reproduction of images being the factor that generates the sensation of movement. </p>
<p>The measure to stipulate the speed of reproduction of frames per second on screens is in hertz, so a 60Hz screen reproduces up to 60 frames per second, while a 120Hz TV reproduces up to 120 frames per second. However, screens with higher refresh rates bring equal benefits and some specific to cell phones and TVs. </p>
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120Hz screen on cell phones

Galaxy S20 has 120 hz screen

The first cell phones to receive a 120hz refresh rate were the gamers models, which makes perfect sense since one of the advantages of the screen with a refresh rate above 60Hz is greater fluidity for games. With more frames per second, the sharpness and fluidity of images in constant motion in action games or battle royale games like Free Fire is increased.

Another benefit of 120hz screens for cell phones is greater fluidity in usability and transition between screens. It is common to hear from users who have 120Hz screens on their phones that the impression is that they have buttered the phone screen due to the speed to navigate through the menus and move between applications.

But as everything has its pros and cons, the 120Hz screens for now are only present in the most expensive smartphones and also consume more battery of the devices. Although cell phones such as the Galaxy Note 20 Ultra have a variable refresh rate, keeping the 60 frames per second in moments of usability more "easy" as in the news reading, devices such as Galaxy S20 do not have such technology, being necessary to reduce or increase the rate update manually in the settings.

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TVs with 120Hz refresh rate

The LG C9 TV has 120 hz native

On larger screens, such as TVs, the improvement in image sharpness is even more noticeable. Since films and series are shot at 20Hz or 24z and TV programs between 30Hz and 60Hz, TVs with a refresh rate of 60Hz or more repeat frames to reach the device's native 60Hz or 120HZ. So it is possible to perceive in greater detail the improvement of sharpness in 120Hz TVs by reducing the feeling of blur in moving images.

The same applies to games, since the greater fluidity in games is also noticed in TVs that have more frames per second. Although manufacturers announce that they have some models with a refresh rate above 120Hz, reaching 240Hz, 480Hz and more. There are no 4K TVs with a native refresh rate above 120Hz, with major updates being achieved through software artificially.

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