Style portrait helps you create a different you by applying your favorite styles when taking portrait photos.
The styles may include face effects, color filters and deco frames.

Add Mystery style effect to Xperia Style portrait application.
With Mystery style effect you can have this real-time style in your viewfinder.
The style of Mystery can be managed and edited in style collection.
Only applicable for phones with Style portrait app in Camera.

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From version Mystery 29.0.A.0.3:
All versions
March 1, 2017
October 18, 2016
June 24, 2016