I have lost my data ability on my LG V30 and pretty sure it happened with the Android Pie update. Still have WiFi and the regular phone signal but no lte.
I have gone to settings and reset networks, toggled the data on/off, even just changed my plan to more data, nothing.
Please don't bother telling me to hard reset, I will sooner ditch Fido and simply go to another network, it's far easier but will give Fido a shot here. I am not seeing much hope.
Welcome to the community!
Have you verified that the phone is still using the proper APN? You can verify those settings here. Since the phone is LTE-capable, it should be using ltemobile.apn. You should be able to access those settings by pressing: Settings --> More --> Mobile Networks --> Access Point Names.
Hope this helps 😀