1. After unlocking the phone, find the "Settings" icon of the phone, as shown in the figure.
2. Then in the settings, slide the phone up and find "Safe", as shown in the figure.
3. After turning on "Security", find "Payment Protection Center" in this interface, as shown in the figure.
4. Finally, in the opened page, click "Payment Guarantee Center", find "Guotai Junan Hong Jun" in this interface, and open the switch bar at the back.