Simple. There is no OIS for videos on the primary camera, You shouldn't have big problem with the still photos though...My friend is using A5 2017 and we managed to take real good photos in broad day light with both the main and secondary cameras
Thank you for your query. The relevant department may serve you better/speedily, if you can provide logs/video by registering this feedback in Error Section (Samsung Members App -> Feedback -> Questions/Errors -> Create -> Error reports).
