I myself have been seeing 3G on a data only SIM the past couple weeks, I have never seen 3G before in this location.
On another forum, many are seeing issues with their connections stalling. Seems to be impacting data only plans in data only devices such as MoFi, Peplink, etc.
Most seem to be able to regain connectivity by restarting the radio or device.
Seems to be impacting a wide geo so not limited to one location or metro area.
Please post here if you are noticing the same