Description : What is the most useful gadget that you have in your home?
Last Answer : For me, it is my mobile phone. It is a very great invention of our times, I would say, it is the only gadget which is and which has all-in-one in it. Yes. You can do a lot of ... the inbuilt features like the ,calculator', 'torch' etc. In fact, the utilities offered by a mobile phone are manifold.