I recently bought the Samsung Galaxy S10 5G, and after about a week or two of using it, I attempted to use the hotspot but was unable to. When trying to turn on the hot spot, I got an error saying "Authentication Error" so I went through all of the troubleshooting steps recommended by Verizon and it still wouldn't work. So I decided to contact Verizon and upon talking with them I was told that "This is a known issue, and we have put together a team to deal with it specifically, so I will email the team, and once they receive my email they will flip a switch, and your hotspot will begin to work immediately." Following this conversation, within 12 hours, my hotspot was working! Just a little information for anyone having the same issue.