Embrace out of the box features include:

Crash reporting (swizzling from Crashlytics on iOS, JVM on Android)
OOM Analytics (Android), Uncategorized Exits (iOS)
ANR exits/intervals
User terminations
Networking

Within Network Monitoring
Domain, path, error code and bytes in/out

Within user sessions
Page views
Clicks and taps
Low power mode ( iOS only)
CPU pegging (iOS only)
Low memory warning
App inactive (i.e. when user takes a phone call)