diff --git a/crates/wzp-native/cpp/oboe_bridge.cpp b/crates/wzp-native/cpp/oboe_bridge.cpp
index 5d4394c..29b9e90 100644
--- a/crates/wzp-native/cpp/oboe_bridge.cpp
+++ b/crates/wzp-native/cpp/oboe_bridge.cpp
@@ -254,16 +254,15 @@ int wzp_oboe_start(const WzpOboeConfig* config, const WzpOboeRings* rings) {
     oboe::AudioStreamBuilder captureBuilder;
     captureBuilder.setDirection(oboe::Direction::Input)
         ->setPerformanceMode(oboe::PerformanceMode::LowLatency)
-        ->setSharingMode(oboe::SharingMode::Exclusive)
+        // Shared mode allows Oboe's internal resampler to bridge 48kHz to
+        // the hardware rate (8/16kHz for BT SCO). Exclusive mode bypasses
+        // the resampler and fails with "getInputProfile could not find profile".
+        ->setSharingMode(oboe::SharingMode::Shared)
         ->setFormat(oboe::AudioFormat::I16)
         ->setChannelCount(config->channel_count)
         ->setSampleRate(config->sample_rate)
         ->setFramesPerDataCallback(config->frames_per_burst)
         ->setInputPreset(oboe::InputPreset::VoiceCommunication)
-        // Bluetooth SCO only supports 8/16kHz. Without resampling, opening
-        // a 48kHz capture stream against a BT device fails with
-        // "getInputProfile could not find profile". Oboe resamples internally
-        // so our ring buffers stay at 48kHz regardless of the hardware rate.
         ->setSampleRateConversionQuality(oboe::SampleRateConversionQuality::Best)
         ->setDataCallback(&g_capture_cb);
 
@@ -319,13 +318,12 @@ int wzp_oboe_start(const WzpOboeConfig* config, const WzpOboeRings* rings) {
     oboe::AudioStreamBuilder playoutBuilder;
     playoutBuilder.setDirection(oboe::Direction::Output)
         ->setPerformanceMode(oboe::PerformanceMode::LowLatency)
-        ->setSharingMode(oboe::SharingMode::Exclusive)
+        ->setSharingMode(oboe::SharingMode::Shared)
         ->setFormat(oboe::AudioFormat::I16)
         ->setChannelCount(config->channel_count)
         ->setSampleRate(config->sample_rate)
         ->setFramesPerDataCallback(config->frames_per_burst)
         ->setUsage(oboe::Usage::VoiceCommunication)
-        // Match capture: Oboe resamples 48kHz ↔ device rate (8/16kHz for BT SCO)
         ->setSampleRateConversionQuality(oboe::SampleRateConversionQuality::Best)
         ->setDataCallback(&g_playout_cb);
 
diff --git a/desktop/src-tauri/src/lib.rs b/desktop/src-tauri/src/lib.rs
index 4ed8a7c..0a2c685 100644
--- a/desktop/src-tauri/src/lib.rs
+++ b/desktop/src-tauri/src/lib.rs
@@ -794,7 +794,7 @@ async fn set_bluetooth_sco(on: bool) -> Result<(), String> {
             // startBluetoothSco() is async — jumping straight to Oboe restart
             // would open streams against earpiece, not the BT device.
             let mut connected = false;
-            for i in 0..30 {
+            for i in 0..50 {
                 tokio::time::sleep(std::time::Duration::from_millis(100)).await;
                 if android_audio::is_bluetooth_sco_on().unwrap_or(false) {
                     tracing::info!(polls = i + 1, "set_bluetooth_sco: SCO connected");
@@ -803,8 +803,12 @@ async fn set_bluetooth_sco(on: bool) -> Result<(), String> {
                 }
             }
             if !connected {
-                tracing::warn!("set_bluetooth_sco: SCO did not connect within 3s, proceeding anyway");
+                tracing::warn!("set_bluetooth_sco: SCO did not connect within 5s, proceeding anyway");
             }
+            // Extra delay: even after getCommunicationDevice reports BT,
+            // the audio policy needs ~500ms to apply the bt-sco route.
+            // Without this, Oboe opens against the old device.
+            tokio::time::sleep(std::time::Duration::from_millis(500)).await;
         } else {
             android_audio::stop_bluetooth_sco()?;
         }