Smartphone payment: paying using a smartphone; a type of mobile payment commonly using apps, e-money, or QR codes.
コンビニでスマホ決済を使って支払ったら、レシートがメールで届いた。
When I paid with smartphone payment at the convenience store, the receipt arrived by email.
スマホ決済は現金を持ち歩かなくて済むので便利だ。
Smartphone payments are convenient because you don't have to carry cash.
お店によっては特定のスマホ決済しか使えない場合がある。
At some shops, only certain smartphone payment services may be accepted.