# Handling Memory Warnings

iOS sends a memory warning to your app when the system is running low on memory and may terminate apps that don't reclaim enough quickly. ContextSDK exposes a method you can call from your existing memory-warning handler so it can release any optional in-memory data it doesn't need to keep around.

Calling this method has no effect on the SDK's correctness - anything released can be re-derived on demand, and recent contexts created via your own flow names are still available afterwards.

## Forwarding the memory warning

Call `ContextManager.didReceiveMemoryWarning()` from your `UIApplicationDelegate.applicationDidReceiveMemoryWarning(_:)`:

{% tabs %}
{% tab title="Swift" %}

```swift
func applicationDidReceiveMemoryWarning(_ application: UIApplication) {
    ContextManager.didReceiveMemoryWarning()
}
```

{% endtab %}
{% endtabs %}

The method is safe to call at any time after `applicationDidFinishLaunchingWithOptions(_:licenseKey:)`, and from any thread.


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