During this day, Orange Romania launched the function 4G call, VoLTE, for iPhone through a Carrier Bundle update made available to us this morning.
The 4G call function is automatically activated on iPhone terminals when you are connected to a 4G network on the iPhone and activate the Voice and data function in Settings > Cellular > Data options > Activate 4G, Configurations > Cellular connection > Data options > Activate 4G.
After activating this option, you will receive an SMS telling you that the option is active for your subscription or card, restarting the terminal completing the activation process.
The 4G Call service has been activated, and from now on you have the fastest call connection in the 4G network and HD sound quality while watching movies and surfing with the fastest internet. To enjoy all this, close and reopen the phone.
With the 4G Call function, VoLTE, you can make phone calls through the 4G network before automatically switching back to 3G.
UPDATED: Here you are how to activate 4G call on iPhone si which iPhones are compatible with Wi-Fi calling.
