If you have been wondering how Siri reacts so quickly when you "raise to speak", the answer is a tiny infrared LED that's added into the proximity sensor in the iPhone 4S. iFixIt discovered the sensor after a second look, determining that it shines brightly whenever the screen is activated. The light isn't visible to the human eye but it's there. And it's constantly letting Siri know how close your face is to your iPhone 4S.
It does raise a few questions, though. IR is fairly light on battery drain but every little bit extra does add up. Also, iPhone 4 and other older models lack the extra IR sensor, making it seem even more unlikely Apple will ever offer an official port.
If you're interested in seeing how it works you can check out iFixIt's video via the link below.
Source: iFixIt

Apple releases new limited-edition Apple Watch Series 6 Black Unity
Apple has just released a brand new limited-edition Apple Watch Series 6 to celebrate Black History Month.

Taron Egerton to star in new Apple TV+ show 'In with the Devil'
A new report says Taron Egerton will star in a new Apple TV+ series called 'In with the Devil' alongside Paul Walter Hauser.

iPhone 12 Pro camera supplier LG sees 43% revenue rise in 2020
iPhone 12 Pro camera supplier LG InnoTek saw its 2020 revenue rise by 43% on the previous year thanks to the iPhone 12's launch in October.

These HomeKit accessories won't upset your landlord
Just because you rent your home, doesn't mean it has to be dumb! You can still deck out your HomeKit with these accessories.