India is fairly unique in how bad the cell phone internet is. Snapchat is a video & image heavy app even compared to instagram or facebook, which is why the app design doesn't work well. Get rid of the media richness and your back to facebook.
When I visited my family in the Philippines, I was asking my younger relatives what social networks/apps they used. When I asked about Snapchat, they said nobody really used it. It made sense in the way how data plans are structured over there, along with how Facebook's Internet.org has really gained a lot of usage in the country in their partnership with the carriers.
