Hi Venu,
best practice would be to *duplicate* the page and create a mobile page with another layout. Data Grids are not good widgets for mobile devices. You could use a list view instead.
Inside the *Navigation* pane you can then select your device specific home page and go from there. If you only need a mobile specific page and the rest could be remain the same, you can create a Microflow to check what kind of device your user is currently using.
I hope this will help you.
Go make it!