Privacy screen protectors sound like a smart idea, but there are drawbacks that many users only discover after buying one. Here's what you should know first.

I'm one of those people who enjoy on planes and in public spaces in general. But the issue of privacy was always a hurdle.

While a screen protector can’t save your phone from a nasty drop — that’s what a good case is for — it’s still worth having. It can keep your screen safe from cracks and scratches that make scrolling ...