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Added in API level 31

TelephonyCallback.CellInfoListener

Kotlin |Java

public static interface TelephonyCallback.CellInfoListener

android.telephony.TelephonyCallback.CellInfoListener

Interface for cell info listener.

Summary

Public methods
`abstract void`	`)">onCellInfoChanged(List<CellInfo> cellInfo)` Callback invoked when an observed cell info has changed or new cells have been added or removed on the registered subscription.

Public methods

onCellInfoChanged

Added in API level 31

public abstract void onCellInfoChanged (List<CellInfo> cellInfo)

Callback invoked when an observed cell info has changed or new cells have been added or removed on the registered subscription. Note, the registration subscription ID s from TelephonyManager object which registers TelephonyCallback by TelephonyManager.registerTelephonyCallback(Executor,TelephonyCallback). If this TelephonyManager object was created with TelephonyManager.createForSubscriptionId(int), then the callback applies to the subscription ID. Otherwise, this callback applies to SubscriptionManager.getDefaultSubscriptionId().
Requires Manifest.permission.READ_PHONE_STATE and Manifest.permission.ACCESS_FINE_LOCATION

Parameters
`cellInfo`	`List`: is the list of currently visible cells. This value cannot be `null`.

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Last updated 2026-08-03 UTC.

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