I turned my Android tablet into a second monitor — and I can't go back

Tablets have always felt stuck between a phone and a laptop. But the moment I turned mine into a second monitor, it finally made sense.
来自MSN

I turned my old Android tablet into a second monitor for free

When looking for a portable monitor, I explored a few options ranging from $60 to $150, including ASUS's ZenScreen. But since I only needed a portable monitor for my laptop when traveling (it's not ...