Mate20 Pro User Guide-(LYA-L09&L29,EMUI10.0_01,EN-GB)

Table Of Contents
1 Go to Phone > > Settings > Ringtone or Settings > Sounds & vibration >
Phone ringtone.
2 Touch Video ringtones and select a video to preview the
eect for incoming calls.
3 Touch to set the video as the ringtone.
Use VoLTE to Make Calls
Voice over LTE (VoLTE) is an IP-based data transmission technology that delivers both call
and data services over a 4G network.
Once VoLTE is enabled, you can make a call while accessing the Internet. If your device
supports dual SIM dual VoLTE, you can receive an incoming call on a SIM card while the
other SIM card is being used for a call.
VoLTE also provides you with a faster call connection time and higher quality voice and video
calls.
Enable VoLTE
1 Contact your mobile carrier to activate the 4G and VoLTE functions for your SIM card. If
both the primary and secondary SIM card trays of a dual-SIM device support 4G and
VoLTE, 4G and VoLTE can be enabled for both SIM cards.
Apps
75