my mum line is starhub but also have that icon. sometimes she couldn't receive or call out until she reboots the phone. what's the problem?
anyway to remove the arrows?
Sent from Samsung SM-N920I using GAGT
The VoLTE icon will only disappear after you have asked Telco to deactivate the service. You cannot disable VoLTE via phone settings. The icon will still be there if you only "disable" from phone settings.
VoLTE uses 4G connectivity to call out and receive calls. If you are at a place with weak 4G, or you do not have any 4G services subscribed, VoLTE will not work. You will have dropped calls as the calls will fail to connect. But most cases, the call will revert to 3G and you can call out/receive calls.
Note that VoLTE will only work if the person you are calling is also using VoLTE. Otherwise, the call will drop to 3G. For example, you are calling someone's mobile number and that person has VoLTE, then the call will be using 4G. If you are calling someone's mobile number and the phone is not a VoLTE-enabled phone, then your call will not use 4G but will switch to use 3G instead.
VoLTE, because it uses 4G, will have faster connection. You will dial through faster compared to non-VoLTE calls. The waiting time to hear the dial tone will be faster (almost instantaneous) and you will have better clarity over your calls.