Onyx, the (IMO) dominant maker of non-Kindle e-ink devices, did: https://www.mobileread.com/forums/showthread.php?t=273936 . It was received well initially but as I understand it, quality issues (e.g. IMEI duplication) proved to be its downfall. I love Onyx devices (had a T68 reader a while ago and still look for the Max* devices) but their quality strangeness keeps me away.