Just purchased the Samsung Galaxy Note 20 Ultra 5G...I was told by customer service that 5G Ultra wide band wasn't available near me at this time, the closest city was Cincinnati. If I upgrade to the 5G UW service, will I be able to get 5G Nationwide until the other service reaches me, and will it let me know that I have 5G Nationwide on my phone? Also, do I need to download the software to my phone for the 5G?