Sorry to read that you’ve been experiencing this issue. Are you getting any specific error message? What's the make and model of your phone? To research further, can you send us the cross streets and ZIP code where this occurs?
Hello there Twagz. I just checked your area with the zip code provided and there is no outages there. Please do the following, turn off the phone, remove the SIM, next go to Settings, General, Reset, Reset Networks Settings. After the update, enter on your dial pad ##25327# and press call. You may see No SIM message. Wait at least one minute until activation is completed. Next, insert the SIM, and reset the network settings again, go to Settings > General > Reset > Reset Network Settings. After complete, again enter ##25327# and press call. Let us know how that worked out.
Oh no! Sorry to hear that, Twagz. Please try going to Settings > Cellular > Turn off "Enable LTE". This should switch you to 3g only. You can change this setting at any time. Let us know if the issue persists while on 3g.