IMPORTANT: This article applies only to specific products and/or operating systems. Check Applicable Products and Categories for details.
VoWiFi (Voice over Wi-Fi) is a telephony service provided by your network operator. It means that your network operator provides a voice call service using Wi-Fi®.
To make a VoWiFi call, you need the recipient's phone number.
The following Xperia® devices support VoWiFi:
- Xperia L1
- Xperia X/X Dual SIM
- Xperia X Compact
- Xperia X Performance/X Performance Dual SIM
- Xperia XA1
- Xperia XA1 Ultra
- Xperia XA1 Plus
- Xperia XZ Premium/XZ Premium Dual SIM
- Xperia XZ/XZ Dual SIM
- Xperia XZs/XZs Dual SIM
- Xperia XZ1
- Xperia XZ1 Compact
- Xperia Z5/Z5 Dual
- Xperia Z5 Compact
- Xperia Z5 Premium/Z5 Premium
VoIP (Voice call over IP) is a SIP (Session Initiation Protocol) call technology using IP packet data service, for example, Skype. A SIM card is not required to make a VoIP call, but you need an IP connection using Wi-Fi or mobile data to access the internet. VoIP calls are not operator-dependent.