Adding and enabling a trusted mobile number will only allow remote commands to be initiated from that particular mobile number. Adding a trusted mobile number is an optional step.
Step 1 - Open Remote Settings
Tap the three vertical dots on the top right of the toolbar and then tap Settings. This will launch the main settings screen. Tap on Remote in the list.
Step 2 - Enable Trusted Number (optional)
To enable trusted number tap Use trusted number for remote
Tap on Trusted number next to enter the phone number you would like to use. It is important that you enter the number in international format without spaces (+44201392822)