Apple iPhone 4S was launched on early october featuring Siri, A Personal Voice Assistance. Many hackers and developers ported Siri to work on older iOS devices. There were lots of rumors that Apple may soon release and iOS update with Siri, But apple recently confirmed that Siri Won’t come for older devices.
Here is a detail explanation from iFixIt guys that why Siri won’t come for older iOS devices.
The IR LED definitely appears to be different on the 4S when compared to the iPhone 4, but we don’t think that the hardware change is causing the light to be continuously lit. That functionality is built into the software system, since it’s the software that tells the light when to turn on, and when to turn off.
Source : iFixIt
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