How to sign in instagram through facebook

Android

1. Go to your profile and then tap
   in the top right.
2. Tap Find Friends to choose to find friends from Facebook, from your phone's contact list or from a list of suggested Instagrammers.
3. Tap Follow next to people whose posts you want to see in your Feed.

iPhone/iPad

1. Go to your profile and then tap
   in the top right.
2. Tap Find People to Follow to choose to find friends from Facebook, from your phone's contact list or from a list of suggested Instagrammers.
3. Tap Follow next to people whose posts you want to see in your Feed.

Windows Phone

1. Go to your profile and then tap
   in the botom right.
2. Tap Settings.
3. Tap Find & Invite Friends and then choose Follow your friends to find friends from Facebook or from your contact list.
4. Tap Suggested users to see people whose posts you may like.
5. Tap Follow next to people whose posts you want to see in your Feed.

Here are the screenshot of my android phone

Screenshot of linked account before I linked my Facebook

Screenshot of linked accounts after I linked my facebook.