More and more people are using smartphones thanks to budget friendly mid-rangers, almost anyone can now afford to buy a smartphone.
Mobile payment is becoming more common and it is an opportunity to acquaint people more into using bitcoin . Mobile payment will eventually replace credit cards or at least will make them less mainstream. An example of this is Apple Pay. Bitcoin smartphone wallet apps are to use when you have a transaction, you just scan a qr code and the transaction is done though will take some time to be confirmed.
That's the goal of Bitcoin, to disrupt Online banking or Online Paying system. So mobile smartphones are very useful today and in the future. You see, nowadays people opt to shop online specially for those who are so busy at their work. It's very convenient for them.