Popular Photography has an article that details Motorola’s team up with Hasselblad to come up with a camera modular add on for the Moto Z Smartphone. Read more on this in the article by HERE.
View Motorola’s marketing of it HERE. To learn about Hasselblad, visit their website
Of course there are other variants for other phones as noted by Popular Photography, such as:
Sony Cyber-shot QX10 and QX100
The DxO One Is a Supercharged iPhone Camera
Looks interesting!