Instagram is a popular Internet-based photo-sharing network that their services provides users a platform to share pictures and videos publicly or privately. Instagram also helps you to add various digital filters to your images before uploading them to your Instagram page for your family and friends to views them.
It is very easy to Recover a deleted Instagram account post if you posted on Instagram app.
Whenever you upload a picture on Instagram it automatically saves in your phone folder on your gallery, and this means that you have nothing to worry about because you can go right there in your phone gallery to get them back.
But if by mistake you have deleted the posts on your phone gallery or maybe you did a factory reset on your phone, it means you will have to download a data recovery application.

Source :http://www.viralvista.net/how-to-recover-a-deleted-instagram-account-post-on-your-phone/