iPhone Background App Refresh is a system feature that allows apps to update their content in the background even when you’re not actively using them.
This keeps apps ready with fresh data the moment you open them.
📌 What Background App Refresh actually does
When enabled, apps can:
- Fetch new data from the internet
- Update content while the app is suspended
- Sync information across devices
- Refresh feeds so they’re ready when you reopen the app
This happens automatically, based on when iOS decides it’s efficient to run them.
Example:
If you leave Twitter/X and come back later, the same tweet you were reading may still be there instead of refreshing to the top.
📌 Why you might turn it OFF
Disabling Background App Refresh can:
- Improve battery life
- Reduce cellular data usage
- Limit unnecessary network activity
Apps won’t update until you open them, so you may see delays in new emails, social media updates, or messages.
📌 How to turn it on or off
Settings → General → Background App Refresh
Choose:
- Off
- Wi‑Fi
- Wi‑Fi & Cellular Data
You can also toggle it per app