Hi,

I got an S24+ 2 days ago. I am really struggling to get the mobile data to work properly. It is slow slow that my apps tell me there is no internet connection.  Sometimes rebooting helps, but not every time and I never get 5g with only 1 sim card.

I placed a 2nd sim into the phone and separated the calls and messages from data and suddenly I have stable 5g.  If I swap the sim cards I have the same issue and the 5g only follows when data is assigned to the one sim card. I have already gotten a new sim and this didn't solve the issue.  

The kicker is that if I only put in the sim card that gives me 5g and take out the 2nd one I go back to having slow to no internet access at all.

This experience has really made me regret coming back to a Samsung after having no issues on iPhone for the last 15 years.