For the past day, I have had no network connection at all. It would just say 'Emergency Calls Only' or 'No network connection.' Also, a small message would appear at the bottom of my screen, saying 'Refreshing Sim Data.' That happens twice in a row every 10-15 minutes. Whenever that message appeared, whatever app I'm using seems to refresh. It's the same for when I'm on the internet. This has been happening all day and I'm sick of it. I would appreciate if I could get help for this problem. My phone is a Samsung Galaxy S7.