The SMS logo always appears in the upper right corner of Nokia phones. How to get rid of it?

This is because the information on your SIM card is full. There is an option to "display information on SIM card" in SMS settings. Just delete the information on the SIM card after opening it. You can also use an ordinary mobile phone to replace it with your SIM card and delete the short messages in the card. I hope I can help you. thank you