Twitter supports sending up to 4 images, 1 animated GIF, or 1 video per tweet. Animated GIFs posted to other social networks will appear as a still image.
Up to 4 images can be attached per message to any other social network.
To add a photo
In the compose message box, tap Camera to take a new photo, or Photo upload to select an existing photo from your device.
Tap an image thumbnail to preview it, or to edit your photo with the Hootsuite Enhance app.