To ensure your carrier settings are up to date, go to Settings > General > About > Carrier.
If prompted to update your carrier settings, select Update.
Our iOS customers have been asking for visual voicemail for a while—and now we have it! You can access visual voicemail via the voicemail tab on your dialer.
Now you can talk over a WiFi network, which means you no longer have to rely on network coverage alone for your calling and texting needs. Got access to WiFi? You’re good to go!
VoLTE (aka Voice Over LTE) lets you connect calls over the LTE network. That’s fancy talk for better quality and faster connection times for your calls!