When you update your Galaxy J7, S Bike mode will automatically install in your phone. And just before riding a bike activate S bike mode and now when your frnd calls you, it will says he is riding a bike call him later.
Its a very good 5.5 inch phone with all essential features. Samsung is market leader in mobile market and J Series is contributing 75% share at this time.
Now J7 2016 also released on online websites and will soon launch in maker Also.