How can I download Android studio with my Android phone
You can't Android Studio is for computer only.
Use this app for creating mobile apps https://play.google.com/store/apps/details?id=com.aide.ui
haha... , no. you cant do that. try saving up for a laptop if you lack resources so that u can start building apps man
If you want to develop Android mobile app with your mobile, use MIT App Inventor: http://appinventor.mit.edu/