Set preferred network type

[duy_h_vu]

I want to set it too LTE/UMTS (auto) PRL. But it keep jumping back to the default long one. And when it is in that default network type and connect to wifi, people getting a busy signal when calling me while my phone doesn't ring. I assume there's too many of different type the phone has to look for.

[OPC]

The same here. Technical support of T-Mobile told me to choose LTE/UMTS/CDMA auto. But it keeps going back to default. Also VoLTE and other options greyed out although the phone has all LTE bands used by Croatian carriers.

[Anders_ASUS]

We don't have any carrier in Croatia that supports VoLTE on our phones.

[OPC]

Thanks for the answer Anders! Any hope this might change?

[duy_h_vu]

Is there an answer for choosing "LTE/UMTS/CDMA auto" yet? I'm also on T-Mobile USA. And for now I change mobile to 2-3g when on WiFi and switch back to 4g when off WiFi to receive call.