SMS history disappears when SIM removed
When the SIM card is removed, SMS history disappears. It is restored when the SIM is re-inserted (only done with a reboot, not sure if it also works without rebooting).
I think most people expect that the SMS history would still be visible in the app even if the SIM is removed.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information