Paytm is like a wallet, through which you can pay ur mobile bill, electricity bil, water bill, book ur railway ticket every rhing you can purchase through paytm wallet.in smart phone. it is linked with ur debit or credit card u can pay ur bills throuh ur debit cards .u can easily shopping any thing throuh ur paytm wallet. it is registered by indian government it is safe and fast mode of payment .spred very fastly, no need of cash and change, every body can use it, very easy to use. being a part of cash less india thanku