[android-components](../../index.md) / [mozilla.components.concept.engine](../index.md) / [DefaultSettings](index.md) / [userAgentString](./user-agent-string.md)

# userAgentString

`var userAgentString: `[`String`](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html)`?` [(source)](https://github.com/mozilla-mobile/android-components/blob/master/components/concept/engine/src/main/java/mozilla/components/concept/engine/Settings.kt#L154)

Overrides [Settings.userAgentString](../-settings/user-agent-string.md)

Setting to control the user agent string.

