What if I don't see the 5G icon on my phone?
If the 5G icon doesn't appear automatically, you can set your phone manually to receive 5G coverage. First, make sure that you are within a 5G coverage area so you can have instant access to 5G. Then follow the steps below:
Setting > Connection > Mobile Networks > Network Mode > Select 5G/LTE/3G/2G (Auto Connect)