Following some initial launch issues
, Vine has updated its iOS app
that allows users to share short videos through Twitter. Most importantly, the update resolves a security sign-in error that was signing some people into other users' accounts, and letting them post under that handle. The update also adds support for changing a profile picture from the Camera Roll, and improves support for international keyboards. Finally, a character limit for usernames and the bio field has been added and several crashes have been resolved.