Hologram display has been in development for a very long time and currently no big brand phone manufacturers has been able to put up a commercial sale of a Holographic display phone. Don't mention Lenovo Smart Cast. Lenovo Smart Cast which is actually a phone with a projector screen. It is awesome but it's still a display in one plane. It has a the projector shooter at the top of the phone. You interact with any surface is you feel having the big phone around is annoying.

What is a hologram ?

A hologram is a photographic recording of a light field, rather than of an image formed by a lens, and it is used to display a fully three-dimensional image of the holographed subject, which is seen without the aid of special glasses or other intermediate - Wiki.

Explanation of the whole technical term is that a hologram is a means of viewing images, pictures like in real life. Imagine viewing the items on Amazon like you're actually thee holding it.

I wondered if a phone manufacturer has been able to come with a true hologram phone and I found  Estar. Other manufacturers such as RED also makes holographic display phones (Hydrogen 1), but I'll cover that later.

Estar manufactured Takee 1, the world's first 3D holographic display phone. The phone brought the company, IF design award in 2015 and also CES award innovation award 2015.

Takee 1 Smartphone has specifications such as 2GB RAM, 32GB internal storage 2Ghz processor, dual-sim, external memory slot, 13Mp rear camera and 5Mp front facing camera and 3.5mm earphone jack etc.

But in terms of hologram, it added some tricks. it comes with a 5.5 inch 3d Holographic screen, four sensors (eye tracking system) that monitor the position and movements of your eye to give a better holographic display in any position you keep your eye. You can interact with the display on-air and lots more with the cutting edge 3D air tracking technology. The down part is that the air motion senor is located only at the phone's bottom front. This makes the air gestures a bit difficult. The android jellybean might be a bit irritating for you if you can't cope with having some apps incompatible.
In the video below, you won't be able to see the holographic effect but it is true hologram.

Estar, looks to make another version of the Takee which will come with 3d image capturing and more extensive 3D Hologram features

Watch review by SuperSaf TV: