How do I download content to my phone?
Edited
To save content on your phone, just follow these steps:
Tap the arrow icon under the content you want to share, or long-press the content
Tap "Save image" to add it to your Photos gallery
If an image isn't saving, make sure you've enabled photo permissions for the app. Follow these steps:
Go to your phone's Settings
Tap "Apps"
Find the app you're using
Tap "Photos" and select "Limited Access" or "Full Access"