I Love Reading on the XTEINK X4

You might&rsquo;ve already heard a lot about it by now since it&rsquo;s gotten quite popular the past few months, but I have some things to say about the XTEINK X4 and how it&rsquo;s become one of my favorite gadgets. &#xA; &#xA; &#xA;&#xA; If this is the first time you&rsquo;re hearing about it, the X4 is an affordable mini e-ink reader roughly the size of a 2010-era smartphone. It sort of feels…