diff --git a/applications/VK_Client.c b/applications/VK_Client.c
index d5b7e58..ddbf363 100644
--- a/applications/VK_Client.c
+++ b/applications/VK_Client.c
@@ -314,8 +314,6 @@ int16_t client_yield(CLte_dev_t *pLte_dev) {
               }
               break;
             } else if (strstr((const char *)lte_dev.at_buf, "NO CARRIER")) {
-              rt_kprintf("disconnect!!!\n");
-              hw_printf("disconnect!!!\n");
               pLte_dev->client1->connect_sta = false;
               _no_carrier_t.match_flag = NO_MATCH;
               break;
diff --git a/board/board.h b/board/board.h
index 413ae16..1e1c242 100644
--- a/board/board.h
+++ b/board/board.h
@@ -42,7 +42,7 @@ void SystemClock_Config(void);
 
 #define BSP_UART1_RX_BUFSIZE 128
 #define BSP_UART1_TX_BUFSIZE 128
-#define BSP_UART2_RX_BUFSIZE 128
+#define BSP_UART2_RX_BUFSIZE 256
 #define BSP_UART2_TX_BUFSIZE 128
 #define BSP_UART3_RX_BUFSIZE 128
 #define BSP_UART3_TX_BUFSIZE 128