How to change Site Title in Google ?

Hello. I have a post on my blog that ranks good in google, but it contains "2015" in the title (Ex: best smartphones 2015). How to change "2015" to "2016" to look like this: "best smartphones 2016"

I want to change the title in google search. Changing the post title would do the trick?

Thank you!

Yes. But it can take some times until the title is indexed by google.

I understand. Thank you