diff --git a/README.md b/README.md
index 86b881bf..808e1426 100644
--- a/README.md
+++ b/README.md
@@ -390,7 +390,13 @@ try {
 }
 ```
 
-See example configurations for different providers below.
+## Error messages
+
+- `service_configuration_fetch_error` - could not fetch the service configuration
+- `authentication_failed` - user authentication failed
+- `token_refresh_failed` - could not exchange the refresh token for a new JWT
+- `registration_failed` - could not register
+- `browser_not_found` (Android only) - no suitable browser installed
 
 #### Note about client secrets
 
diff --git a/android/src/main/java/com/rnappauth/RNAppAuthModule.java b/android/src/main/java/com/rnappauth/RNAppAuthModule.java
index 8b5fae35..b493bdae 100644
--- a/android/src/main/java/com/rnappauth/RNAppAuthModule.java
+++ b/android/src/main/java/com/rnappauth/RNAppAuthModule.java
@@ -7,6 +7,7 @@
 import android.content.Intent;
 import android.net.Uri;
 import android.os.Bundle;
+import android.content.ActivityNotFoundException;
 import androidx.annotation.Nullable;
 import androidx.browser.customtabs.CustomTabsCallback;
 import androidx.browser.customtabs.CustomTabsClient;
@@ -245,6 +246,8 @@ public void authorize(
                         usePKCE,
                         additionalParametersMap
                 );
+            } catch (ActivityNotFoundException e) {
+                promise.reject("browser_not_found", e.getMessage());
             } catch (Exception e) {
                 promise.reject("authentication_failed", e.getMessage());
             }
@@ -327,6 +330,8 @@ public void refresh(
                         clientSecret,
                         promise
                 );
+            } catch (ActivityNotFoundException e) {
+                promise.reject("browser_not_found", e.getMessage());
             } catch (Exception e) {
                 promise.reject("token_refresh_failed", e.getMessage());
             }