docs(android): Document ANR profiling and fingerprinting (#16816)

## DESCRIBE YOUR PR

Document two new Android SDK features available in version 8.35.0:

- **ANR Profiling (Experimental)**: Captures main thread stack profiles
during ANR detection, attached as flamegraphs on the issue details page.
Configured via `anrProfilingSampleRate` (disabled by default).
- **ANR Fingerprinting**: Groups system-frame-only ANRs into a single
issue to reduce noise. Enabled by default, configurable via
`enableAnrFingerprinting`.

Changes across three files:
- `docs/platforms/android/configuration/app-not-respond.mdx` — New
sections with configuration examples (AndroidManifest.xml, Kotlin, Java)
- `docs/platforms/android/configuration/options.mdx` — New `SdkOption`
entries for both features
- `docs/platforms/android/index.mdx` — Links to new features in Next
Steps

Related SDK PRs:
- getsentry/sentry-java#4899
- getsentry/sentry-java#5168

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## PRE-MERGE CHECKLIST

*Make sure you've checked the following before merging your changes:*

- [ ] Checked Vercel preview for correctness, including links
- [ ] PR was reviewed and approved by any necessary SMEs (subject matter
experts)
- [ ] PR was reviewed and approved by a member of the [Sentry docs
team](https://github.com/orgs/getsentry/teams/docs)

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: markushi

docs/platforms/android/configuration/app-not-respond.mdx

@@ -1,7 +1,7 @@
 ---
 title: Application Not Responding (ANR)
 sidebar_order: 4
-description: Learn how to turn off or specify ANR.
+description: Learn how to turn off or configure ANR detection, profiling, and fingerprinting.
 og_image: /og-images/platforms-android-configuration-app-not-respond.png
 ---
 
@@ -105,6 +105,77 @@ SentryAndroid.init(context) { options ->
 
 ![ANR Thread Dump](./img/app-not-respond-thread-dump.png)
 
+## ANR Profiling (Experimental)
+
+<Alert>
+
+ANR Profiling is available starting in SDK version `8.35.0`. This feature is experimental and may change in future versions.
+
+</Alert>
+
+<Alert>
+
+ANR profiles are powered by the Profiling platform and require a plan with profiling enabled. See the [pricing page](https://sentry.io/pricing/) for more details.
+
+</Alert>
+
+The SDK can capture stack profiles for foreground ANRs of the main thread when an ANR is detected. A profile is a time-based view of your stack trace, showing which functions were executing and for how long. The captured profile is attached to the ANR event on the next app start, providing a flamegraph on the Sentry issue details page. This gives you deeper insight into what the main thread was doing at the time of the ANR.
+
+```mermaid
+flowchart LR
+    A[App start] --> B
+    B[Main thread<br>blocked > 1s] --> C[Collect and store ANR profile to disk]
+    E[Next app start] --> F[Read<br>ApplicationExitInfo] --> G[Match stored<br>ANR profile] --> H[Attach ANR profile<br>to ANR event]
+```
+
+To enable ANR profiling, set the `anrProfilingSampleRate` to a value between `0.0` and `1.0`. This controls the probability of collecting a profile for each detected foreground ANR:
+
+```xml {filename:AndroidManifest.xml}
+<application>
+    <meta-data android:name="io.sentry.anr.profiling.sample-rate" android:value="1.0" />
+</application>
+```
+
+```kotlin
+SentryAndroid.init(context) { options ->
+    options.anrProfilingSampleRate = 1.0
+}
+```
+
+```java
+SentryAndroid.init(context, options -> {
+    options.setAnrProfilingSampleRate(1.0);
+});
+```
+
+Once enabled, ANR events will include a profile section on the issue details page, showing a flamegraph of the main thread activity at the time of the ANR:
+
+![ANR Profile](./img/anr-profile.png)
+
+## ANR Fingerprinting
+
+The SDK assigns a static fingerprint to ANR events whose stack traces contain only system frames (for example, classes from `java.lang` or `android.os`). This groups noisy system-frame-only ANRs into a single issue, reducing noise in your issue stream. Foreground and background system-frame-only ANRs are grouped separately.
+
+ANR fingerprinting is enabled by default starting in SDK version `8.35.0`. To disable it:
+
+```xml {filename:AndroidManifest.xml}
+<application>
+    <meta-data android:name="io.sentry.anr.enable-fingerprinting" android:value="false" />
+</application>
+```
+
+```kotlin
+SentryAndroid.init(context) { options ->
+    options.isEnableAnrFingerprinting = false
+}
+```
+
+```java
+SentryAndroid.init(context, options -> {
+    options.setEnableAnrFingerprinting(false);
+});
+```
+
 ## ANR Root Cause Analysis
 
 Sentry performs various root cause analyses to give you insights about why certain ANRs might appear. If a potential root cause is detected, it'll be displayed in a new section below the ANR stack trace. Sentry can detect the following root causes:

docs/platforms/android/configuration/img/anr-profile.png

@@ -375,6 +375,20 @@ A boolean value that determines whether the app start process will be profiled.
 
 </SdkOption>
 
+## ANR Options
+
+<SdkOption name="anrProfilingSampleRate" type="float" defaultValue="null" availableSince="8.35.0">
+
+A number between `0` and `1`, controlling the percentage chance a profile will be collected for each detected foreground ANR. (`0` represents 0% while `1` represents 100%.) The default is null (disabled). When set, the SDK captures a stack profile of the main thread at the time of ANR detection and attaches it to the ANR event on the next app start.
+
+</SdkOption>
+
+<SdkOption name="enableAnrFingerprinting" type="bool" defaultValue="true" availableSince="8.35.0">
+
+When enabled, the SDK assigns a static fingerprint to ANR events whose stack traces contain only system frames. This groups noisy system-frame-only ANRs into a single issue, reducing noise. Foreground and background system-frame-only ANRs are grouped separately.
+
+</SdkOption>
+
 ## Transaction-Based Profiling Options
 
 This mode will eventually be deprecated, and it's recommended to upgrade to <PlatformLink to="/configuration/options/#ui-profiling-options">UI Profiling</PlatformLink>. The same behaviour, without the 30 seconds limitation, can be achieved with the `trace` <PlatformLink to="/configuration/options/#profile-lifecycle">profile lifecycle</PlatformLink> option. In order to upgrade to UI Profiling, you also need to remove the transaction-based options from your configuration.

docs/platforms/android/configuration/options.mdx

@@ -188,3 +188,4 @@ class MyActivity : AppCompatActivity() {
 - <PlatformLink to="/features">Learn about the features of Sentry's Android SDK</PlatformLink>
 - <PlatformLink to="/enhance-errors">Learn how to enhance stack traces of your Sentry errors</PlatformLink>
 - <PlatformLink to="/enriching-events">Enrich events with additional context to make debugging simpler</PlatformLink>
+- <PlatformLink to="/configuration/app-not-respond">Diagnose ANRs</PlatformLink> with profiling and automatic fingerprinting