Both of your Phone's SIM card slots support 4G, VoLTE, and VoWiFi, so there is no need to
switch SIMs back and forth.
• Dual 4G: Both of your Phone's SIM card slots support 4G.
• Dual VoLTE: Both of your Phone's SIM card slots support VoLTE, allowing you to use the
Internet while making HD calls.
• Dual VoWiFi: Both of your Phone's SIM card slots support VoWiFi, which allows calls to be
made using Wi-Fi. You can use VoWiFi to make calls even in Airplane mode.
Some carriers may not support this feature.
Use VoWi-Fi for a New Calling Experience
You can use VoWi-Fi to make voice and video calls in any location that has a Wi-Fi network,
even when there is no mobile network reception.
This feature must be supported by your carrier. Contact your carrier for more information,
including fees and charges.
Open Phone, go to > Settings > Wi-Fi calling, enable Wi-Fi calling. Touch Mode
and follow the onscreen instructions to set the preferred network.
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