diff --git a/examples/bluetooth/a2dp_source/main/main.c b/examples/bluetooth/a2dp_source/main/main.c
index 0e87478b8..174448c10 100644
--- a/examples/bluetooth/a2dp_source/main/main.c
+++ b/examples/bluetooth/a2dp_source/main/main.c
@@ -106,6 +106,8 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
+
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
 
     if (esp_bt_controller_init(&bt_cfg) != ESP_OK) {
diff --git a/examples/bluetooth/ble_hid_device_demo/main/ble_hidd_demo_main.c b/examples/bluetooth/ble_hid_device_demo/main/ble_hidd_demo_main.c
index 12c9483e3..2aaa74726 100644
--- a/examples/bluetooth/ble_hid_device_demo/main/ble_hidd_demo_main.c
+++ b/examples/bluetooth/ble_hid_device_demo/main/ble_hidd_demo_main.c
@@ -271,6 +271,8 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT));
+
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     ret = esp_bt_controller_init(&bt_cfg);
     if (ret) {
diff --git a/examples/bluetooth/bt_discovery/main/bt_discovery.c b/examples/bluetooth/bt_discovery/main/bt_discovery.c
index 20c072611..9fa3a7561 100644
--- a/examples/bluetooth/bt_discovery/main/bt_discovery.c
+++ b/examples/bluetooth/bt_discovery/main/bt_discovery.c
@@ -279,6 +279,8 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
+
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     if ((ret = esp_bt_controller_init(&bt_cfg)) != ESP_OK) {
         ESP_LOGE(GAP_TAG, "%s initialize controller failed: %s\n", __func__, esp_err_to_name(ret));
diff --git a/examples/bluetooth/bt_spp_acceptor/main/example_spp_acceptor_demo.c b/examples/bluetooth/bt_spp_acceptor/main/example_spp_acceptor_demo.c
index e6c1cf6be..713e94c85 100644
--- a/examples/bluetooth/bt_spp_acceptor/main/example_spp_acceptor_demo.c
+++ b/examples/bluetooth/bt_spp_acceptor/main/example_spp_acceptor_demo.c
@@ -159,6 +159,7 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
 
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     if ((ret = esp_bt_controller_init(&bt_cfg)) != ESP_OK) {
diff --git a/examples/bluetooth/bt_spp_initiator/main/example_spp_initiator_demo.c b/examples/bluetooth/bt_spp_initiator/main/example_spp_initiator_demo.c
index 8ab19b55d..37233ee37 100644
--- a/examples/bluetooth/bt_spp_initiator/main/example_spp_initiator_demo.c
+++ b/examples/bluetooth/bt_spp_initiator/main/example_spp_initiator_demo.c
@@ -244,6 +244,7 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
 
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     if ((ret = esp_bt_controller_init(&bt_cfg)) != ESP_OK) {
diff --git a/examples/bluetooth/bt_spp_vfs_acceptor/main/example_spp_vfs_acceptor_demo.c b/examples/bluetooth/bt_spp_vfs_acceptor/main/example_spp_vfs_acceptor_demo.c
index caa978c7b..7ab10dcf6 100644
--- a/examples/bluetooth/bt_spp_vfs_acceptor/main/example_spp_vfs_acceptor_demo.c
+++ b/examples/bluetooth/bt_spp_vfs_acceptor/main/example_spp_vfs_acceptor_demo.c
@@ -164,6 +164,8 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
+
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     if (esp_bt_controller_init(&bt_cfg) != ESP_OK) {
         ESP_LOGE(SPP_TAG, "%s initialize controller failed", __func__);
diff --git a/examples/bluetooth/bt_spp_vfs_initiator/main/example_spp_vfs_initiator_demo.c b/examples/bluetooth/bt_spp_vfs_initiator/main/example_spp_vfs_initiator_demo.c
index 00462a309..1e309285a 100644
--- a/examples/bluetooth/bt_spp_vfs_initiator/main/example_spp_vfs_initiator_demo.c
+++ b/examples/bluetooth/bt_spp_vfs_initiator/main/example_spp_vfs_initiator_demo.c
@@ -232,6 +232,7 @@ void app_main()
     }
     ESP_ERROR_CHECK( ret );
 
+    ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_BLE));
 
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     if (esp_bt_controller_init(&bt_cfg) != ESP_OK) {