transferring viber photos to sd card

[Mcclos]

i have got a sd card for my samsung s3 mini. i have transferred photos taken with phone camera using 'my files' and have set storage for future photos to sd card using camera app.
i want to know how to transfer viber photos and videos to sd card.

thank you

 

[popatim]

https://support.viber.com/customer/portal/articles/1381709-how-can-i-save-media-files-to-my-camera-roll-#.Ve9dvdJVhBc

You mean this?