The use of variable aperture on smartphones has recently become more and more popular. Huawei uses it, Xiaomi does the same and in the future Apple is rumored to include more or less the same camera technology on one of the iPhone 17 models.
Apple is said to use technology with mechanical controls. Apple's iteration is more or less the same as any Chinese-made smartphone. This feature is to improve the camera capabilities of the device. With a variable aperture system, focus problems can be solved and a natural bokeh effect can also be obtained. It's also helpful for close-up shots such as macros.
The iPhone now relies on its own clever lens and algorithm technology. Who knows Apple may find a unique variable aperture concept that Samsung failed to succeed after introducing it on the Galaxy S9. Who knows this feature is limited to the iPhone 17 Slim which is rumored to be packed with new technology and use its own design. Let's wait together.