Your suggestion feels like a lot more work and effort that still leads to terrible UX, slow phones and unhappy customers. 1. Customers being nagged their SD ca

Your suggestion feels like a lot more work and effort that still leads to terrible UX, slow phones and unhappy customers. 1. Customers being nagged their SD card is slow will hate the phone, not just the SD card they just bought and can't return. How will the users know which cards are fast enough? Most average users are not tach savvy at all and are easily duped by marketing fluff. 2. SD cards can also die out of the blue. Good luck trying to predict when with an app. You might as well just offer them data recovery services while you're at it for when they loose all their photos. It's easier to just skip SD cards and offer fast and solid UFS storage at a higher cost, that you can vouch for, instead of something that could always be flaky for reasons outside of your control.