The module currently supports
download,
queueDownload,
attachOnCompleteListener,
cancel,
checkStatus

You can check https://github.com/master-atul/react-native-simple-download-manager/blob/master/index.js

Not helpful.

checkStatus function requires a downloadId, which is a long number inside a string.

However, the documentation does not include any way to get the downloadId value.

let abc = ReactNativeSimpleDownloadManager.download(~~~~~~~)

abc becomes a Promise object instance, which is not downloadId.