What if Samsung note5 has no service?

1. First, the operator's "no service" signal appears in the notification bar on the mobile phone. As shown in the figure:

2, and then open the phone screen to find the settings icon and click. As shown in the figure:

3, open the phone settings to find wireless and network options and click. As shown in the figure:

4. Switch to the wireless and network interface options, and click the dual card management option. As shown in the figure:

5. When the dual-card management interface is opened, if the mobile phone is correctly inserted into the card slot, it will appear gray, but it is not already opened, and it is closed here. As shown in the figure:

6. Click the switch button to open it, and the operator's name will be automatically displayed in the notification bar. As shown in the figure: