You lose some features: Wi-Fi calling, VoLTE, etc, you may not use them
though, but when time comes and you do need them it might be a
surprise.No live support, basically you need to figure out your concerns
within this community
This is likely due to your location and services coverage.since you have
a fairly new iPhone, the device is fully capable of 4g connection from
itself.you might live at a location with weak lte signal, thus the phone
frequently fall back to 3g. Or it...