Tap Settings > Sound > Phone ringtone (SIM1) or Advanced > Phone ringtone (SIM2), and select the tone.
Change your message notification sound
Tap Settings > Sound > Advanced > Default notification sound.
Define the emergency key functions
With the emergency key, you can quickly call your emergency contacts, or open apps, for example.
Tap Settings > System > Gestures > Programmable emergency key.
To select what happens when you press the key briefly, tap Change sound profile, and select from the available options.
To select what happens when you press and hold the key, tap Dial emergency contacts, and select from the available options. If you select Dial emergency contacts, the phone directs you to add your emergency contacts’ details, if you have not added them yet. After that, when you press and hold the emergency key, the phone calls the first of your emergency contacts. If there is no answer, the phone calls the next emergency contact. In addition to calling, the phone also sends a link to your location in a message to your emergency contacts.