do something on OR in my phone

[mrwroc]

I browse pictures ON my smartphone.
I read the news ON my smartphone.
I listen to music ON my smartphone.

yes?

 

[tedmc]

Yes, "on".

 

[emsr2d2]

I browse pictures ON my smartphone.
I read the news ON my smartphone.
I listen to music ON my smartphone.

Yes?

Although your very short question at the end is OK in very informal/casual English, we encourage learners here to use full sentences. It would have been more appropriate here to say "Are my sentences correct?" or, to highlight the relevant part, "Have I used the preposition "on" correctly in those sentences?"