2.2.16更新内容：
- Bug fixes and improvements (6/8)
- Improved MMS sending (5/28)
- Pick photos from your gallery in the camera tab
- Add captions to photos from the camera tab
- Easy sending/sharing after taking a photo (turn this off anytime in Settings)
- See where photos were taken on a stylish map
- Free texting switches to SMS if there are any problems
- Read receipts and sent indicators! (this works when your friends use hello)
- Free SMS when your friends use hello too!
直达链接：hello短信 2.2.16