Improvements to file sharing and calling

iOS 3.3.4 Release Notes:

- Improved new message sorting and previews

- Fixed bugs related to rejecting a call

- Added support for screenshot sharing

- Updated outgoing call ringtone

- Fixed an issue with Core Connection that would cause Glacier to disconnect when connected to a trusted network

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Android 3.3.2 Release Notes:

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- Improved video for landscape and laptops

- Included better video feed management

- Fixed conflicts with native calls

- Removed delay for joining group chats

- Added self to group participants list

- Added user status link to profile page
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