IPhone 6 s has a single mono speaker on the bottom and its very loud and clear and also call quality is clear.
iPhone 6 s comes with new A 9 processor with 2 GB of ram and in terms of performance and uses its very responsive device.
design of iPhone 6 S is very similar to iPhone 6.Apple uses 700 series aluminium which makes stronger body.
One of the new feature is new 3 D touch in the keypad you can use it like a track pad.Fingerprint scanner is improve and quick responsive.