Are the latest devices need of the day today?

Now the technology is going to make its era strong as the digital world is growing very fast day by day. Various devices have been introduced in the world but it is a very complicated thing to think that what device is more useful than others. Different companies are going to compete with one another for making their devices latest and famous for their needs of the users in this world. As we know that now a person needs a lot of things in one device for the best results. Some people wait for the latest devices to purchase. But I think the time is near when many of the companies use the way of feedback for the betterment of their technology and the latest needs of the users.