docs(crashlytics): add anr collection support section

docs/crashlytics/crash-reports.md

@@ -46,3 +46,15 @@ you to filter it out in the overview by selecting 'Open' under 'Issue state', wh
 This is visible in the first example, where we're displaying only 3 relevant non-fatal events out of the 12 that occurred.
 When the same issue re-occurs, it will automatically open again. By clicking the arrow next to the button we can mute the
 issue, preventing this from happening.
+
+# Android ANR Collection Support
+
+The Firebase Team enabled the ability to collect
+Application Not Responding (ANR) issues that occur when the  UI thread of an Android app is blocked for too long,
+for more information on ANR see the
+[android developer documentation](https://developer.android.com/topic/performance/vitals/anr).
+
+The support for ANR collection is added in the Android Crashlytics version
+[18.2.4](https://firebase.google.com/support/release-notes/android#crashlytics_v18-2-4)
+so that your react native application can collect ANR, make sure you are using at least version 13.0.1 of this library
+