How to pratice and improve our skills in android mobile..?

Answer 1

I know only skill which is solve real world problem which is better than other options.just like create any app,game which is in need.

Answer 2

Aditya Tiwari if your question is about how to improve programming skills using an android mobile device:
I would say that using sololearn app is a good answer if not the best.
If your question is about improving the skills needed to build android apps:
this site may help: https://developer.android.com/training/basics/firstapp