Samsung SM-A146U1/DS User Manual

Also see for SM-A146U: Quick start guide

Settings74Making payments with the NFC featureBefore you can use the NFC feature to make payments, you must register for the mobilepayment service. To register or get more information about the service, contact your serviceprovider.1 On the Settings screen, tap Connections and tap the NFC and contactless paymentsswitch to activate it.2 Touch the NFC antenna area on the back of your device to the NFC card reader.To set the default payment app, open the Settings screen and tap Connections → NFC andcontactless payments → Contactless payments → Payment, and then select an app.The payment services list may not include all available payment apps.Data saverReduce your data usage by preventing some apps running in the background from sendingor receiving data.On the Settings screen, tap Connections → Data usage → Data saver and tap the switch toactivate it.When the data saver feature is activated, the icon will appear on the status bar.Data saver feature activatedTo select apps to use data without restriction, tap Allowed to use data while Datasaver is on and select apps.