Use APKPure App
Get JsPay old version APK for Android
Buy from vending machines with your smartphone.
Buy from vending machines in a simple and safe using your smartphone as if I used the key, with JsPay you load up your credit directly in cash from the vending machine or use a credit card.
You can also recharge, with prepaid cards which will provide you the same operator and assign or receive credit your or your friends.