The S10's camera function will allow you to select the Instagram Mode option in the same way you opt for panorama or pro shooting modes. The function allows users shoot via the phone's camera and edit with Instagram's tools, such as adding filters, stickers, text, and hashtags, and then upload direct to Instagram Stories without actually opening the app.
“We’ve worked together to rethink the experience of Instagram on the S10,” Instagram head of product Adam Mosseri said during the event.
According to The Verge, Samsung is opening up its camera SDK (software development kit) to allow potential developers to take advantage of the phone's camera in their own apps. In addition to Instagram, Snapchat, beauty app Snow, and travel app Lime are also listed as partners.