# TelephonyCallback.DisplayInfoListener

Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)

# DisplayInfoListener

*** ** * ** ***

Kotlin \|[Java](https://developer.android.com/reference/android/telephony/TelephonyCallback.DisplayInfoListener "View this page in Java")  

```
interface DisplayInfoListener
```

|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| [android.telephony.TelephonyCallback.DisplayInfoListener](https://developer.android.com/reference/kotlin/android/telephony/TelephonyCallback.DisplayInfoListener#) |

Interface for display info listener.

## Summary

|                                                                                                                                                                                                                                                  Public methods                                                                                                                                                                                                                                                  ||
|---------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| abstract [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [onDisplayInfoChanged](https://developer.android.com/reference/kotlin/android/telephony/TelephonyCallback.DisplayInfoListener#onDisplayInfoChanged(android.telephony.TelephonyDisplayInfo))`(`telephonyDisplayInfo:` `[TelephonyDisplayInfo](https://developer.android.com/reference/kotlin/android/telephony/TelephonyDisplayInfo)`)` Callback invoked when the display info has changed on the registered subscription. |

## Public methods

### onDisplayInfoChanged

Added in [API level 31](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels)  

```
abstract fun onDisplayInfoChanged(telephonyDisplayInfo: TelephonyDisplayInfo): Unit
```

Callback invoked when the display info has changed on the registered subscription.

The [TelephonyDisplayInfo](https://developer.android.com/reference/kotlin/android/telephony/TelephonyDisplayInfo) contains status information shown to the user based on carrier policy.

|                                                                                          Parameters                                                                                          ||
|------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| `telephonyDisplayInfo` | [TelephonyDisplayInfo](https://developer.android.com/reference/kotlin/android/telephony/TelephonyDisplayInfo): The display information. This value cannot be `null`. |