3G Shutdown: IMS APN Fix for Android VoLTE
The 3G shutdown is around the corner, which means you need your phone to operate through the newer and faster 4G/LTE network. This can only be achieved by using Voice over LTE (VoLTE), which is also known as Enhanced 4G LTE, or HD calling. Although most newish Android devices will easily connect through the LTE network, there are a few models that will need a little push to make this happen.