Honestly, I had hella issues with SD card storage back on I wanna say s10? the phone juttered and stalled and really struggled, the second I pulled the card it was totally fine again. took it to Samsung who couldnt find a fault so just decided not worth it. I just buy a big enough phone and “deal” with it these days. I’ve only filled it once I think, and the iphone “Dump quality photos to icloud storage” solved the issue.