[Home](./index.md) > [@snowplow/react-native-tracker](./react-native-tracker.md) > [SubjectConfiguration](./react-native-tracker.subjectconfiguration.md) > [useragent](./react-native-tracker.subjectconfiguration.useragent.md) ## SubjectConfiguration.useragent property The custom user-agent. It overrides the user-agent used by default. Signature: ```typescript useragent?: string; ```