In the camera app's settings you can change the resolution of the pictures or videos your device will take. A lower resolution photo will take up less space on your device but may not look as good as a high resolution photo.
1.
From the Camera app, tap the Settings icon.
2.
Tap Settings.
3.
Tap Photo size.
4.
Select a photo size.
Select a smaller size to make it easier to send share photos with other devices.