The problem may come from one of your import. The settings() method must be called before any Firestore interaction is performed, otherwise it will only take effect on the next app launch: Cloud Firestore data bundles are static data files built by you from Cloud Firestore document and query snapshots, WebReact Native Image Picker. "react-number-format": "^4.4.1", Gets the device font scale. It should have been a major version bump, we apologize for the mistake. It is also possible to simply inline