diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7776c52fa..a9d0b312f 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,6 +2,10 @@
 
 ## Unreleased
 
+### Features
+
+- Add concrete error messages for RN bundle build phase patch ([#3626](https://github.com/getsentry/sentry-react-native/pull/3626))
+
 ### Fixes
 
 - Option `enabled: false` ensures no events are sent ([#3606](https://github.com/getsentry/sentry-react-native/pull/3606))
diff --git a/plugin/src/withSentryIOS.ts b/plugin/src/withSentryIOS.ts
index 60460fc51..c33cd8d6b 100644
--- a/plugin/src/withSentryIOS.ts
+++ b/plugin/src/withSentryIOS.ts
@@ -46,14 +46,29 @@ export const withSentryIOS: ConfigPlugin<string> = (config, sentryProperties: st
 };
 
 export function modifyExistingXcodeBuildScript(script: BuildPhase): void {
-  if (
-    !script.shellScript.match(/(packager|scripts)\/react-native-xcode\.sh\b/) ||
-    script.shellScript.includes('sentry-xcode.sh') ||
-    script.shellScript.includes('@sentry')
-  ) {
+  if (!script.shellScript.match(/(packager|scripts)\/react-native-xcode\.sh\b/)) {
     WarningAggregator.addWarningIOS(
       SDK_PACKAGE_NAME,
-      "Unable to modify build script 'Bundle React Native code and images'. Please open a bug report at https://github.com/expo/sentry-expo.",
+      `'react-native-xcode.sh' not found in 'Bundle React Native code and images'.
+Please open a bug report at https://github.com/getsentry/sentry-react-native`,
+    );
+    return;
+  }
+
+  if (script.shellScript.includes('sentry-xcode.sh')) {
+    WarningAggregator.addWarningIOS(
+      SDK_PACKAGE_NAME,
+      "The latest 'sentry-xcode.sh' script already exists in 'Bundle React Native code and images'.",
+    );
+    return;
+  }
+
+  if (script.shellScript.includes('@sentry')) {
+    WarningAggregator.addWarningIOS(
+      SDK_PACKAGE_NAME,
+      `Outdated or custom Sentry script found in 'Bundle React Native code and images'.
+Regenerate the native project to use the latest script.
+Run npx expo prebuild --clean`,
     );
     return;
   }