When I turn off the wifi and on top of the phone it shows LTE, so I think it is enable properly. Should it be on LTE network only when the alerts being sent? It seems quite unlikely this could be the case. For iphone 6s, APN setting only has name, us...
I also don't get any energency alert message. The phone is iphone 6s, and I have also tried another phone. Both didn't work. The setting has been checked and no way to get it through.