The concept of the mobile payment is that you can go for goods on-the-go. It's emerging pretty fast nowadays, and they call it "Mobile Wallet". It's actually a great idea to have it since you'll more likely to forget your purse/physical wallet more than your phone, and it's convenient when that happens. We have it in our country, but not all establishments support it yet since it requires network connectivity for the transaction. As for Bitcoin, it's kinda like the same, but its wallet is a crypto wallet.