Smartphones these days all look more or less the same. They're basically just a big black or white rectangle when you get right down to it. Do you remember when flip phones and slider phones were king? Now, they're making a comeback.
At the Mobile World Congress, flip phones got some pretty big buzz. That's because Mozilla (yes, the company that created the Firefox browser) has announced that it will be bringing sliders and flip phones back to the market.
After it revealed Firefox OS, a smartphone operating system targeted at emerging phone markets, Mozilla concentrated on creating its own phone. That's where the flip phones and sliders come into play.