The technical specifications don’t suit Apple very much. In most cases in Cupertino, they prefer to keep things simple, talk about percentages and improvements without insisting on details that would not be understandable to everyone. For example, this is the case of the display of the new iPhone 13 Pro and Pro Max presented in September, among the elements that, thanks to the introduction of the variable refresh rate up to 120 Hz, has improved more than the previous generation.
iPhone 13 Pro and iPhone 13 Pro Max-like all other smartphones with the same technology – can adjust the display frequency to the activity performed, specifically with a lower peak of 10 Hz (therefore an image that is updated 10 times per second) and a higher one, in fact, of 120 Hz. It is the first variable: when reading a text, therefore with a static image, the frequency is very low so as not to waste battery, when instead the rhythm is turn up – for example with a game – the refresh can reach the high peak of 120 Hz.
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Good. Apple introduced a second variable that affects the refresh rate: the speed at which your finger swipes across the display. The faster the movement, the faster the screen updates its image: if you scroll through a feed very quickly, the display reaches 120 Hz to give a feeling of maximum fluidity and increase the user experience, while if you the management system does it more calmly and commands a lower refresh. Apple therefore would have preferred not to have frequencies decided a priori based on the type of app you are using, but to change them instantly.
The Instagram feed, for example, can be viewed at 10Hz while pausing on a photo, at 30 or 60Hz while watching a video, at 90Hz while scrolling at moderate speed, and at 120Hz when browsing. proceeds faster. This precise and timely management, on the one hand, keeps the user experience at the highest possible level instant by moment, on the other, it is probably one of the secrets that allowed the two iPhone 13 Pro to amaze us too in terms of autonomy.