On November 9, iFixit.com posted a blog entry about the proximity sensor on the iPhone 4S. They begin by saying:
During our iPhone 4S teardown, iFixit buddy Markus noted that the new iPhone had a rather unusual-looking black component next to the ambient light sensor. We didn’t make much of a fuss about it since we were knee-deep in disassembly pictures, but the little black box certainly piqued our curiosity.
They later explain that the “unusual-looking black component” was the infrared LED proximity sensor—a sensor that’s on every iPhone, not just the 4S. The post goes on to explain that the proximity sensor on an iPhone 4S comes on whenever the screen is on, if you have Siri set to activate whenever you hold the phone to your face. The proximity sensors in all other iPhones only come on during an active call (or a Skype, Viber, Tango, etc. call).
My question is: Why were the people at iFixit so mystified by the iPhone 4S proximity sensor? These people are iPhone hardware experts, it’s not a new feature, and it’s in the same general (if not exact) location as on all other iPhones. During iFixit’s teardown report, they only mention a singular “infra-red LED proximity sensor” in Step 14 of page 2.
Then for some reason (my guess is lazy reporting and a desire for page views), both TUAW.com and TiPb.com write posts claiming that iFixit has revealed that the iPhone 4S has a secondary proximity sensor for Siri (TUAW link, TiPb link). No, iFixit feigned confusion (in my opinion) about the proximity sensor hardware to add dramatic effect to their post about how Siri uses the proximity sensor.
Laziness all around.