BugSnag automatically captures a variety of data to help you understand what affects your app’s performance.
The following data is collected and added to all spans:
| Data | 
|---|
| A boolean value which is true if the app is running in the foreground | 
The User Agent string, taken from navigator.userAgent as well as navigator.userAgentData.platform and navigator.userAgentData.mobile where available | 
The page URL, title and referrer of the page on which the span was created – see also sendPageAttributes configuration option |