Will the iPhone 6 eventually be able to do what the iPhone 6s does?

Like will we be able to update it or something so it can do what the iPhone 6s does? Like the camera thing and the touch screen and the hey siri?

Yes and no. Some of the 6S features will become available to the 6 when you update to IOS 9. However not all features will be available. This is due to hardware limitations of the iPhone 6. So don't expect the new live photo function to carry over to the 6. And don't expect the multitasking abilities to carry over as well due to the lack of ram that the 6 has compared to the 6S.

The Hey Siri function however will come to the 6.

No. Those are all hardware improvements.

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