It's a clever idea and one of the best modular smartphone concepts I've seen so far. (techspot.com)
The modular smartphone concept has started becoming a lot more popular of late, and could add a lot more functionality to our smartphones. (digitaltrends.com)
For these reasons and some more we haven't listed, the Kyocera Echo failed to capture the market and the foldable smartphone concept died with it. (xda-developers.com)