Changes On 4.2.1.0 : - Send self-destructing photos and videos to any one-on-one chats (use the clock icon in the media picker to set a timer).
- Edit photos even quicker with the improved photo editor.
- Add a bio to your profile (in Settings) so that people in large group chats know who you are.
- Download media from large public channels faster thanks to the new encrypted CDNs.
- When choosing a sticker, tap the "up" button in the sticker panel to expand it to full screen.