diff --git a/android/README.md b/android/README.md
index 88b09f1..00b2259 100644
--- a/android/README.md
+++ b/android/README.md
@@ -80,12 +80,12 @@ devices:
   - Samsung Galaxy S25-15.0
   - Samsung Galaxy S26-16.0
 
-# Maestro version — pin to a stable version when accessibility is enabled
+# Maestro version — pin to a default version when accessibility is enabled
 # NOTE: accessibility is not supported with maestroVersion: latest
-# maestroVersion: 1.38.0
+# 1.39.13 is the supported version for accessibility scanning.
 
 # Observability & debugging
-testObservability: true   # Required when accessibility: true
+testObservability: false
 networkLogs: true
 deviceLogs: true
 appProfiling: true
@@ -175,11 +175,11 @@ run-android.bat
 
 | Capability | Note |
 |---|---|
-| `maestroVersion: latest` | Accessibility scanning is **not supported** with `latest`. Pin to a specific version (e.g. `1.38.0`) when `accessibility: true`. |
+| `maestroVersion: latest` | Accessibility scanning is **not supported** with `latest`. Pin to Default version (e.g. `1.39.13`) when `accessibility: true`. |
 | `retryTestsOnFailure` | Works with both sharded and non-sharded builds. |
 | `deviceSelection: all` | Each shard runs on **every** listed device. Total sessions = shards × devices. Ensure your parallel limit covers this. |
 | `deviceSelection: any` | BrowserStack picks one available device per shard. Total sessions = number of shards. |
-| `testObservability` | Must be `true` when `accessibility: true`. |
+| `testObservability` | Must be `false` when `accessibility: false`. |
 | `custom_id` | Re-uploading with the same `custom_id` updates the alias — no need to update `bs://` URLs. |
 
 ---
diff --git a/android/browserstack.yml b/android/browserstack.yml
index 9cf8b6c..0b8d14d 100644
--- a/android/browserstack.yml
+++ b/android/browserstack.yml
@@ -44,14 +44,14 @@ devices:
 maestroVersion: 1.39.13
 
 # ── Observability & debugging ──────────────────────────────────────────────────
-# testObservability MUST be true Only when accessibility is enabled/ else keep false
+# testObservability MUST be false when accessibility is disabled
 testObservability: false
 networkLogs: true
 deviceLogs: true
 appProfiling: true
 
 # Retry failed tests once before marking them as failed.
-retryTestsOnFailure: false
+retryTestsOnFailure: true
 
 # ── Accessibility scanning ─────────────────────────────────────────────────────
 accessibility: true
diff --git a/ios/browserstack.yml b/ios/browserstack.yml
index 5a05e64..62cece8 100644
--- a/ios/browserstack.yml
+++ b/ios/browserstack.yml
@@ -54,6 +54,16 @@ accessibilityOptions:
 
 
 # ── Sharding ───────────────────────────────────────────────────────────────────
+# PARALLEL SESSION CALCULATION:
+#   deviceSelection: all  → each shard runs on EVERY listed device
+#                           total sessions = numberOfShards × number of devices
+#                           e.g. 5 shards × 4 devices = 20 parallel sessions
+#   deviceSelection: any  → BrowserStack picks ONE available device per shard
+#                           total sessions = numberOfShards (1 per shard)
+#
+# Ensure your account's parallel limit >= total sessions or builds will be
+# queued / rejected with BROWSERSTACK_ALL_PARALLELS_IN_USE.
+
 shards:
   numberOfShards: 5
   deviceSelection: any