How can i enable erase background option

[sahil297]

Why i can't on erase background option 

Does Anyone knows ???

[stfusaad]

Chose a photo in that the main subject is in centre/big in size
i.e. human photo
If this was helpful click on 3 dots and click on accept solution

[vinayshah]

Gallery->select image click on edit icon "pencil like icon" go to last settings menu...