On the website Mashable there was a guide how to upload gifs to Instagram on Android and iOS. Tell you.
To upload GIF to Instagram, the file must be converted to the video format MP4. How to do it.
iOS: save the GIF in the Photos app; download the app GifLab (costs $1.99, but you can look for free analogues) and select “GIF to Instagram”; select the desired file and adjustable speed. Now the GIF in MP4 format you can post it to Instagram.
How to do it on Android: we perform the same actions, but with the app GIFHY CAM.
Just like that, thanks to one app, you can upload GIF to Instagram.