diff --git a/components/bt/bluedroid/osi/config.c b/components/bt/bluedroid/osi/config.c
index 38281ed9da..99b30219ee 100644
--- a/components/bt/bluedroid/osi/config.c
+++ b/components/bt/bluedroid/osi/config.c
@@ -91,7 +91,12 @@ config_t *config_new(const char *filename)
     nvs_handle fp;
     err = nvs_open(filename, NVS_READWRITE, &fp);
     if (err != ESP_OK) {
-        LOG_ERROR("%s unable to open file '%s'\n", __func__, filename);
+        if (err == ESP_ERR_NVS_NOT_INITIALIZED) {
+            LOG_ERROR("%s: NVS not initialized. "
+                      "Call nvs_flash_init before initializing bluetooth.", __func__);
+        } else {
+            LOG_ERROR("%s unable to open NVS namespace '%s'\n", __func__, filename);
+        }
         config_free(config);
         return NULL;
     }
@@ -316,6 +321,10 @@ bool config_save(const config_t *config, const char *filename)
 
     err = nvs_open(filename, NVS_READWRITE, &fp);
     if (err != ESP_OK) {
+        if (err == ESP_ERR_NVS_NOT_INITIALIZED) {
+            LOG_ERROR("%s: NVS not initialized. "
+                      "Call nvs_flash_init before initializing bluetooth.", __func__);
+        }
         err_code |= 0x02;
         goto error;
     }
diff --git a/components/esp32/phy_init.c b/components/esp32/phy_init.c
index 43e9c97ce5..5a007ce5dd 100644
--- a/components/esp32/phy_init.c
+++ b/components/esp32/phy_init.c
@@ -159,22 +159,18 @@ static esp_err_t store_cal_data_to_nvs_handle(nvs_handle handle,
 
 esp_err_t esp_phy_load_cal_data_from_nvs(esp_phy_calibration_data_t* out_cal_data)
 {
-    esp_err_t err = nvs_flash_init();
-    if (err != ESP_OK) {
-        ESP_LOGW(TAG, "%s: failed to initialize NVS (0x%x)", __func__, err);
-        return err;
-    }
     nvs_handle handle;
-    err = nvs_open(PHY_NAMESPACE, NVS_READONLY, &handle);
-    if (err != ESP_OK) {
+    esp_err_t err = nvs_open(PHY_NAMESPACE, NVS_READONLY, &handle);
+    if (err == ESP_ERR_NVS_NOT_INITIALIZED) {
+        ESP_LOGE(TAG, "%s: NVS has not been initialized. "
+                "Call nvs_flash_init before starting WiFi/BT.", __func__);
+    } else if (err != ESP_OK) {
         ESP_LOGD(TAG, "%s: failed to open NVS namespace (0x%x)", __func__, err);
         return err;
     }
-    else {
-        err = load_cal_data_from_nvs_handle(handle, out_cal_data);
-        nvs_close(handle);
-        return err;
-    }
+    err = load_cal_data_from_nvs_handle(handle, out_cal_data);
+    nvs_close(handle);
+    return err;
 }
 
 esp_err_t esp_phy_store_cal_data_to_nvs(const esp_phy_calibration_data_t* cal_data)
diff --git a/components/nvs_flash/include/nvs_flash.h b/components/nvs_flash/include/nvs_flash.h
index 8307fe3521..9220f0d3ff 100644
--- a/components/nvs_flash/include/nvs_flash.h
+++ b/components/nvs_flash/include/nvs_flash.h
@@ -18,6 +18,8 @@
 extern "C" {
 #endif
 
+#include "nvs.h"
+
 /**
  * @brief Initialize NVS flash storage with layout given in the partition table.
  *
@@ -30,6 +32,17 @@ extern "C" {
 esp_err_t nvs_flash_init(void);
 
 
+/**
+ * @brief Erase NVS partition
+ *
+ * This function erases all contents of NVS partition
+ *
+ * @return
+ *      - ESP_OK on success
+ *      - ESP_ERR_NOT_FOUND if there is no NVS partition in the partition table
+ */
+esp_err_t nvs_flash_erase(void);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/components/nvs_flash/src/nvs_api.cpp b/components/nvs_flash/src/nvs_api.cpp
index 7c9ec89a6f..300ea28942 100644
--- a/components/nvs_flash/src/nvs_api.cpp
+++ b/components/nvs_flash/src/nvs_api.cpp
@@ -86,6 +86,17 @@ extern "C" esp_err_t nvs_flash_init(void)
     return nvs_flash_init_custom(partition->address / SPI_FLASH_SEC_SIZE,
             partition->size / SPI_FLASH_SEC_SIZE);
 }
+
+extern "C" esp_err_t nvs_flash_erase()
+{
+    const esp_partition_t* partition = esp_partition_find_first(
+            ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_NVS, NULL);
+    if (partition == NULL) {
+        return ESP_ERR_NOT_FOUND;
+    }
+
+    return esp_partition_erase_range(partition, 0, partition->size);
+}
 #endif
 
 static esp_err_t nvs_find_ns_handle(nvs_handle handle, HandleEntry& entry)
diff --git a/examples/bluetooth/a2dp_sink/main/main.c b/examples/bluetooth/a2dp_sink/main/main.c
index 09bb923542..3e97b4f3ec 100644
--- a/examples/bluetooth/a2dp_sink/main/main.c
+++ b/examples/bluetooth/a2dp_sink/main/main.c
@@ -43,7 +43,14 @@ static void bt_av_hdl_stack_evt(uint16_t event, void *p_param);
 
 void app_main()
 {
-    nvs_flash_init();
+    /* Initialize NVS — it is used to store PHY calibration data */
+    esp_err_t ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK( ret );
+
 
     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_adv/main/app_bt.c b/examples/bluetooth/ble_adv/main/app_bt.c
index 31e8f2fa00..6d0ef24595 100644
--- a/examples/bluetooth/ble_adv/main/app_bt.c
+++ b/examples/bluetooth/ble_adv/main/app_bt.c
@@ -18,6 +18,7 @@
 #include "freertos/task.h"
 #include "bt.h"
 #include "esp_log.h"
+#include "nvs_flash.h"
 
 static const char *tag = "BLE_ADV";
 
@@ -217,6 +218,13 @@ void bleAdvtTask(void *pvParameters)
 
 void app_main()
 {
+    /* Initialize NVS — it is used to store PHY calibration data */
+    esp_err_t ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK( ret );
     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/blufi/main/blufi_example_main.c b/examples/bluetooth/blufi/main/blufi_example_main.c
index 3a91ac7905..d349663a62 100644
--- a/examples/bluetooth/blufi/main/blufi_example_main.c
+++ b/examples/bluetooth/blufi/main/blufi_example_main.c
@@ -321,7 +321,14 @@ void app_main()
 {
     esp_err_t ret;
 
-    ESP_ERROR_CHECK( nvs_flash_init() );
+    // Initialize NVS
+    ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK( ret );
+
     initialise_wifi();
 
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
diff --git a/examples/bluetooth/controller_hci_uart/main/controller_hci_uart_demo.c b/examples/bluetooth/controller_hci_uart/main/controller_hci_uart_demo.c
index 6270596d92..0aa130de8f 100644
--- a/examples/bluetooth/controller_hci_uart/main/controller_hci_uart_demo.c
+++ b/examples/bluetooth/controller_hci_uart/main/controller_hci_uart_demo.c
@@ -14,7 +14,7 @@
 
 #include <stdio.h>
 #include <string.h>
-
+#include "nvs.h"
 #include "bt.h"
 #include "driver/uart.h"
 #include "esp_log.h"
@@ -34,6 +34,15 @@ void app_main()
 { 
     esp_err_t ret;
 
+    /* Initialize NVS — it is used to store PHY calibration data */
+    ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK( ret );
+
+
     /* As the UART1/2 pin conflict with flash pin, so do matrix of the signal and pin */
     uart_gpio_reset();
 
diff --git a/examples/bluetooth/gatt_client/main/gattc_demo.c b/examples/bluetooth/gatt_client/main/gattc_demo.c
index 080eb29d3a..8d7dcd37c2 100644
--- a/examples/bluetooth/gatt_client/main/gattc_demo.c
+++ b/examples/bluetooth/gatt_client/main/gattc_demo.c
@@ -24,6 +24,8 @@
 #include <string.h>
 #include <stdbool.h>
 #include <stdio.h>
+#include "nvs.h"
+#include "nvs_flash.h"
 #include "controller.h"
 
 #include "bt.h"
@@ -409,6 +411,14 @@ void gattc_client_test(void)
 
 void app_main()
 {
+    // Initialize NVS.
+    esp_err_t ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK( ret );
+
     esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT();
     esp_bt_controller_init(&bt_cfg);
     esp_bt_controller_enable(ESP_BT_MODE_BTDM);
diff --git a/examples/bluetooth/gatt_security_server/main/example_ble_sec_gatts_demo.c b/examples/bluetooth/gatt_security_server/main/example_ble_sec_gatts_demo.c
index 3bdbb51428..4b708f3ab2 100644
--- a/examples/bluetooth/gatt_security_server/main/example_ble_sec_gatts_demo.c
+++ b/examples/bluetooth/gatt_security_server/main/example_ble_sec_gatts_demo.c
@@ -366,6 +366,15 @@ static void gatts_event_handler(esp_gatts_cb_event_t event, esp_gatt_if_t gatts_
 void app_main()
 {
     esp_err_t ret;
+
+    // Initialize NVS.
+    ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK( ret );
+
     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/gatt_server/main/gatts_demo.c b/examples/bluetooth/gatt_server/main/gatts_demo.c
index aa6bad6e5c..a49e3f81c6 100644
--- a/examples/bluetooth/gatt_server/main/gatts_demo.c
+++ b/examples/bluetooth/gatt_server/main/gatts_demo.c
@@ -503,6 +503,14 @@ void app_main()
 {
     esp_err_t ret;
 
+    // Initialize NVS.
+    ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK( ret );
+
     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/gatt_server_service_table/main/gatts_table_creat_demo.c b/examples/bluetooth/gatt_server_service_table/main/gatts_table_creat_demo.c
index 5cfe563b01..facad9fd82 100644
--- a/examples/bluetooth/gatt_server_service_table/main/gatts_table_creat_demo.c
+++ b/examples/bluetooth/gatt_server_service_table/main/gatts_table_creat_demo.c
@@ -318,6 +318,14 @@ void app_main()
 {
     esp_err_t ret;
 
+    // Initialize NVS.
+    ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK( ret );
+
     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/storage/nvs_rw_blob/main/nvs_blob_example_main.c b/examples/storage/nvs_rw_blob/main/nvs_blob_example_main.c
index 6232984f44..ad55e6b0a6 100644
--- a/examples/storage/nvs_rw_blob/main/nvs_blob_example_main.c
+++ b/examples/storage/nvs_rw_blob/main/nvs_blob_example_main.c
@@ -13,7 +13,6 @@
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 #include "esp_system.h"
-#include "esp_partition.h"
 #include "nvs_flash.h"
 #include "nvs.h"
 #include "driver/gpio.h"
@@ -150,11 +149,8 @@ void app_main()
     esp_err_t err = nvs_flash_init();
     if (err == ESP_ERR_NVS_NO_FREE_PAGES) {
         // NVS partition was truncated and needs to be erased
-        const esp_partition_t* nvs_partition = esp_partition_find_first(
-                ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_NVS, NULL);
-        assert(nvs_partition && "partition table must have an NVS partition");
-        ESP_ERROR_CHECK( esp_partition_erase_range(nvs_partition, 0, nvs_partition->size) );
         // Retry nvs_flash_init
+        ESP_ERROR_CHECK(nvs_flash_erase());
         err = nvs_flash_init();
     }
     ESP_ERROR_CHECK( err );
diff --git a/examples/storage/nvs_rw_value/main/nvs_value_example_main.c b/examples/storage/nvs_rw_value/main/nvs_value_example_main.c
index db01a6afc4..03205ad4da 100644
--- a/examples/storage/nvs_rw_value/main/nvs_value_example_main.c
+++ b/examples/storage/nvs_rw_value/main/nvs_value_example_main.c
@@ -13,7 +13,6 @@
 #include "freertos/FreeRTOS.h"
 #include "freertos/task.h"
 #include "esp_system.h"
-#include "esp_partition.h"
 #include "nvs_flash.h"
 #include "nvs.h"
 
@@ -23,11 +22,8 @@ void app_main()
     esp_err_t err = nvs_flash_init();
     if (err == ESP_ERR_NVS_NO_FREE_PAGES) {
         // NVS partition was truncated and needs to be erased
-        const esp_partition_t* nvs_partition = esp_partition_find_first(
-                ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_NVS, NULL);
-        assert(nvs_partition && "partition table must have an NVS partition");
-        ESP_ERROR_CHECK( esp_partition_erase_range(nvs_partition, 0, nvs_partition->size) );
         // Retry nvs_flash_init
+        ESP_ERROR_CHECK(nvs_flash_erase());
         err = nvs_flash_init();
     }
     ESP_ERROR_CHECK( err );
diff --git a/examples/system/ota/main/ota_example_main.c b/examples/system/ota/main/ota_example_main.c
index bb931ae0af..d33cccced7 100644
--- a/examples/system/ota/main/ota_example_main.c
+++ b/examples/system/ota/main/ota_example_main.c
@@ -19,7 +19,6 @@
 #include "esp_event_loop.h"
 #include "esp_log.h"
 #include "esp_ota_ops.h"
-#include "esp_partition.h"
 
 #include "nvs.h"
 #include "nvs_flash.h"
@@ -286,10 +285,7 @@ void app_main()
         // OTA app partition table has a smaller NVS partition size than the non-OTA
         // partition table. This size mismatch may cause NVS initialization to fail.
         // If this happens, we erase NVS partition and initialize NVS again.
-        const esp_partition_t* nvs_partition = esp_partition_find_first(
-                ESP_PARTITION_TYPE_DATA, ESP_PARTITION_SUBTYPE_DATA_NVS, NULL);
-        assert(nvs_partition && "partition table must have an NVS partition");
-        ESP_ERROR_CHECK( esp_partition_erase_range(nvs_partition, 0, nvs_partition->size) );
+        ESP_ERROR_CHECK(nvs_flash_erase());
         err = nvs_flash_init();
     }
     ESP_ERROR_CHECK( err );
diff --git a/examples/wifi/power_save/main/power_save.c b/examples/wifi/power_save/main/power_save.c
index f9112c4446..d03881ff80 100644
--- a/examples/wifi/power_save/main/power_save.c
+++ b/examples/wifi/power_save/main/power_save.c
@@ -17,6 +17,7 @@
 #include "esp_wifi.h"
 #include "esp_log.h"
 #include "esp_event_loop.h"
+#include "nvs_flash.h"
 
 /*set the ssid and password via "make menuconfig"*/
 #define DEFAULT_SSID CONFIG_WIFI_SSID
@@ -79,5 +80,13 @@ static void wifi_power_save(void)
 
 void app_main()
 {
+    // Initialize NVS
+    esp_err_t ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK( ret );
+
     wifi_power_save();
 }
diff --git a/examples/wifi/wps/main/wps.c b/examples/wifi/wps/main/wps.c
index 9f60a00a86..dd4a66c195 100644
--- a/examples/wifi/wps/main/wps.c
+++ b/examples/wifi/wps/main/wps.c
@@ -20,6 +20,7 @@
 #include "esp_log.h"
 #include "esp_wps.h"
 #include "esp_event_loop.h"
+#include "nvs_flash.h"
 
 
 /*set wps mode via "make menuconfig"*/
@@ -106,5 +107,13 @@ static void start_wps(void)
 
 void app_main()
 {
+    /* Initialize NVS — it is used to store PHY calibration data */
+    esp_err_t ret = nvs_flash_init();
+    if (ret == ESP_ERR_NVS_NO_FREE_PAGES) {
+        ESP_ERROR_CHECK(nvs_flash_erase());
+        ret = nvs_flash_init();
+    }
+    ESP_ERROR_CHECK( ret );
+
     start_wps();
 }