Long about mid-2013 there were rumors circulating the iPhone 5C will be out shortly, and the "C" stood for shade. Personally, I am awaiting the iPhone 8H, that is the iPhone "Holographic" variant. You might think that this is a bit too extravagant, but I guarantee you it is not. Cell phones with holographic projectors don't have to exist in science fiction.
The Minority Report and Star Wars. Right now IBM has a massive research and development staff working on this, and there are numerous companies which produce holographic projectors that are about the size of a brick.
Together with the new 4G wireless technologies, there'll be sufficient bandwidth to handle all of the information required to endeavor in 3-D holograms. Does this mean a holographic projector would be a future smartphone attachment? You may rent a 3D hologram projector through this link https://holocube-na.com/hologram-displays-rental-toronto.
The technology exists today – it is only an issue of decreasing it, and bringing down the price. Moore's Law has done that in more or less every other high-tech industry, and that I can only presume that Intel will have 3-D holographic chips (indoors) for lightweight private tech in the not too distant future.
How could this work you ask? Well, you may be speaking to somebody and they'll turn on their movie camera in their smartphone, and it'll take a 2-D representation of these in full movement and add from the three-dimensional variant and beam that advice to the receiving party, which will then be projected into a hologram originating on their cell phone.
Nevertheless considering all of the programs for video games and communicating, and the demand for sending thoughts and designs throughout the "Internet of things" too is that the upcoming availability of such applications and bandwidth, certainly all this will be utilized for communicating, so everyone will have it, and why not?