Data persistence

react-native-keychain provides a persistent data storage solution that survives app restarts and updates. However, it should not be relied upon as the sole source of truth for irreplaceable or critical data. Data stored using react-native-keychain is erased when the app is uninstalled. The exception is iOS, where stored data can persist across app reinstalls due to the way iOS handles keychain storage

To check if data is available in the keychain/keystore, you can use hasGenericPassword and hasInternetCredentials:

import Keychain from 'react-native-keychain';

const isGenericPasswordAvailable = await Keychain.hasGenericPassword({
  service: 'service_key'
});

const isInternetCredentialAvailable = await Keychain.hasInternetCredentials({
  server: 'https://google.com'
});