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16: 9, 18: 9 or 21: 9: What do you get with each of these screen formats?

Those who follow smartphones must have realized that from a few years to now a change in screens is happening. They are getting narrower and longer than those of models a few years ago, and taking better advantage of the front of the device. That is, they are changing proportions. Do you know what this is, and why it's important to you? Come with us as we will explain all about screen aspect ratio in this article.

What is the ratio?

The ratio of a screen (Aspect Ratio, in English) the ratio of its width and height or in the case of vdeos and photos, the ratio of the horizontal and vertical resolution of the image. A clip HD (1280 x 720 pixels) ratio is 16: 9, which means that the longest side of the video 1.777777778 times greater than the smaller side.

Well-programmed apps can take advantage of multiple screen proportions, just as on a PC an app runs the same regardless of your monitor resolution. The main difference is in multimedia content such as video, if the screen has the same ratio of a video clip, for example, he went to occupy the entire screen. But if the aspect ratio is different, you will need to add black bars around the image to compensate for the extra space.

16: 9

Popularly known as widescreen, the ratio 16: 9 used in the production of video in high definition (HD and Full HD) and now almost the standard on most Android devices and all iPhones from the iPhone 5 at the 8 Plus.

The main advantage of this format is compatibility, since virtually all apps are optimized for it. The problem that the smartphone body ratio itself (width / height) on the same, which leads to less use of space in front of the device, with edges above and below the screen.

Also, if you watch content in 21: 9 (also known as anamrfico widescreen) in a 16: 9 screen, you'll end up with beautiful black borders above and below the image. Also not the best ratio for those who want to use split screen apps as it results in fairly narrow windows for each app.

21 9 out of 16 9
A movie in 21: 9 on a 16: 9 screen. Note the black edges above and below the image / Disney / Disclosure

18: 9

The 18: 9 ratio appeared with the Galaxy S8 and its Infinity Display. A 2 times higher than wide screen (hence also known as 2: 1) allowing a better use of the front of the device, or use a larger screen without increasing the size of the smartphone itself. In a short time it has become very common among Android smartphone manufacturers, especially the top of the line models.

If an app is not optimized for 18: 9 screens, it appears with black borders above and below the screen, as in the screenshot below. But as this format has been on the market for over 2 years, this is increasingly rare.

App on 18 9
On the left, an app not optimized on an 18: 9 screen. right after optimization. Note that with the extra space you can see more content. / Google Blog

For multimedia content the 18: 9 format is not a good solution. Both 16: 9 (HD and Full HD) and 21: 9 (movie) movies will appear with black borders above and below the screen. A solution to zoom in on the video, making the image occupy the full height of the screen but sacrificing some of it on the side edges.

16 9 out of 18 9
A 16: 9 video on an 18: 9 / HBO / Divulgation screen

21: 9

It is the most popular format for movie film production, but it is a newbie among smartphones. The first Android phone with this type of screen was Sony's Xperia 1, which was introduced during the MWC 2019. But the first cell phone with this type of screen is much older: the LG New Chocolate (BL40), a handset. of 2009 that did not avenge.

In Brazil the first Android smartphone with a 21: 9 screen is the newly launched Motorola One Vision. The first thing you notice is how it changes the shape of the device, which gets narrower but longer. It looks like the smartphone has been stretched. This can be detrimental to one-handed use as it is much harder to reach the top of the screen with your thumb.

IMG 1177
An app in the optimized on the 21: 9 screen of Motorola One Vision. Note the difference between the end of the app window and the end of the screen, indicated by the white bar. / AndroidPIT

Again, apps that are not optimized for this format run with black borders above and below the image. Can be a nuisance (especially if an app that you use every day), but the trend is that as developers adapt this is increasingly rare.

inonesoftwarevision "sizes =" (max-width: 806px) calc (100vw - 24px), (max-width: 995px) 782px, (max-width: 1216px) calc (2 * (100vw - 30px) / 3) + 15px - 24px), 782px "src =" "srcset =" inonesoftwarevision-w782.png 782w, 596w, png 450w, 336w, 300w "class = "lazyload" />
The 21: 9 aspect ratio screen lets you see more content and take full advantage of split screen mode / AndroidPIT
<p>However, 21: 9 is the best format for watching movies on the smartphone: they take up the entire screen without borders. Also good for those who like to use two split screen apps, as as our editor Bruno Salutes mentioned in the One Vision hands-on, there is more room for each app. Also great for those who like to read or surf the web using their mobile phone. It is possible to see more content at once, and you need to scroll the screen less.</p>
<p><strong>Are you interested in a movie screen smartphone? Or does it not matter to you? Leave your opinion in the comments below.</strong></p><div class='code-block code-block-7' style='margin: 8px auto; text-align: center; display: block; clear: both;'>
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(tagsToTranslate) smartphone (t) widescreen (t) screen hd (t) full hd (t) 16: 9 (t) 18: 9 (t) 21: 9 (t) superwide screen (t) ultrawide screen (t) xperia 1 (t) motorola one Vision