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        the blackberry was a step towards smart phones or phones with easy internet access - 
  
  
        The iPhone 4 by Apple was a giant step toward the smart phones we are all familiar with today and sports the first square shaped iPhone design - 
  
  
        Along with having better processor chips the iPhone 5s Introduce new technology that allowed a user to unlock their device using fingerprint identification - 
  
  
        This iPhone by Apple improve processors, cameras, and adds water resistance all while fitting in a slimmer package - 
  
  
        The iPhone X by Apple introduce face tracking to handheld devices, as well as created a personal device that could be fully submerged in water.