There have been a few phones which provided that, notably the HTC Evo 3D. It had dual cameras and an autostereoscopic (glasses-free 3D) display.
The value provided was, IMO, quite minimal. It was not easier to use or better in any user-facing discernible way, the 3D stuff just felt like a gimmick. 3D photos taken by the phone and viewed on its screen did not feel more lifelike. The color depth and image quality was poor even by the standards of other phones of its era.
While it was very cool and felt very futuristic, it did not feel worth the cost.
The value provided was, IMO, quite minimal. It was not easier to use or better in any user-facing discernible way, the 3D stuff just felt like a gimmick. 3D photos taken by the phone and viewed on its screen did not feel more lifelike. The color depth and image quality was poor even by the standards of other phones of its era.
While it was very cool and felt very futuristic, it did not feel worth the cost.