Building my own 64GB memory card with a $6 eMMC chip (2016)
Given the compatibility between SD/MMC, one thing I'd like to see on the market, but haven't, is an Android phone which has no "internal storage" to speak of, but instead replaces the soldered-in eMMC with a microSD socket. That would make expanding, brick-recovery, as well as backing up and controlling access to the data very easy; like taking the hard drive out of a computer before giving it to someone else.It's not difficult at all to do from the hardware perspective, but no one seems to have produced such a thing on the mass market.