Hello friends:)
Paytm is one such app, where you can do anything be it online shopping, paying bills etc etc, on a single go, everything on your own comfort zone.
You want to charge your cell phone use paytm, you have gone for shopping you can do transactions from paytm, no need to carry cash with you every where you go, do it by paytm .
You have booked a cab, here also you can pay with paytm no need to do transactions with cash.