yarn install
create local.properties in android/ folder and write
sdk.dir=path/to/your/Android/sdk
set your google maps api key at android/app/src/main/AndroidManifest.xml
<meta-data android:name="com.google.android.geo.API_KEY" android:value="your key"/>
set the default initialState location in src/store/context/index.tsx
yarn run ios
yarn run android