A Translation button will appear on feed stories and profile bios if they’re written in languages different from your own. Captions and comments on posts in your feed and the bio on your profile will be translated automatically based on the language they’re written in and the language settings of the person viewing it.
“If translations aren’t showing up, it could be because we couldn’t detect or don’t currently support the language,” writes Instagram. “Keep in mind that translations also may not show up for older posts and comments”.
If your language is available as a translation, you will be able to tap See Translation below the text to see it. To change the language that the Instagram app appears in, adjust your iOS device’s language in Settings → General → Language & Region to select your iPhone’s preferred language.
It’s unclear which underlying service Instagram will be using for this feature.
Just two weeks ago, the mobile Instagram app gained a brand new iOS Share extension for uploading content to the service directly from other apps. Instagram passed 500 million monthly active users earlier this week. 80 percent of Instagram users are located outside of the United States.