Send MMS

1. Android

1.1. Send photos in gallery

1.2. File formats

1.2.1. JPEG

1.2.2. PNG

1.2.3. giff

1.2.3.1. converted as PNG

1.2.4. no

1.2.4.1. other doc formats

1.2.4.2. videos

1.2.4.3. audio

1.2.4.4. don't allow taking pictures ?

1.3. Compression

1.3.1. custom algorithm

1.4. Permissions

1.4.1. SD card permission

1.5. Pick photos from gallery

1.5.1. Samsung gallery

1.5.2. Google photos

1.5.3. Downloaded/remote

1.5.3.1. Crash in google photos

1.5.4. Other gallery apps

1.6. OEMs

1.6.1. Samsung

1.6.2. Google

1.6.3. LG

1.6.4. HTC

1.7. Gotchas

1.7.1. Once you selected your sources you can't change it back easily

1.7.2. Sent Images on clicking will open thumbnails NOT the orignal

1.7.3. Showing camera icon

1.7.3.1. Slack

1.7.4. change icon

1.8. Only send one image currently

1.9. Timeline should show image

2. Restrictions

2.1. 1.5MB max size

2.1.1. combined size of the MMS (even with multiple images)

3. iOS

3.1. Permissions