Is anyone having issues with LTE ?

Mine is working, I would suggest the following:

APN | Network Settings | Fizz

See #2-3-4 to reset APN settings on the phone.

Or #2 on this page: How do I restore my phone to its factory settings? | Fizz

Reset your phone’s network settings

1. IMPORTANT: This operation will also reset your WiFi settings, mobile data, Bluetooth, etc.
2. The steps to follow to reset your network settings will vary depending on the type of phone. Here are two examples:
3. Android: Settings → General management → Reset → Reset network settings
4. iPhone: Settings → General → Reset → Reset network settings