diff --git a/lib/image/image.cpp b/lib/image/image.cpp
index 2fcb3ce..172cba5 100644
--- a/lib/image/image.cpp
+++ b/lib/image/image.cpp
@@ -28,13 +28,13 @@ void oledTitle(OLEDDisplay *display, String s, int16_t x, int16_t y) {
 
 void oledWebFrame(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y) {
     // Title
-    oledTitle(display, "Fox Home", x, y);
+    oledTitle(display, F("Fox Home"), x, y);
 
     // Items
     display->setTextAlignment(TEXT_ALIGN_LEFT);
-    display->drawString(0+x, 16+y, "Today");
-    display->drawString(0+x, 30+y, "Last Week");
-    display->drawString(0+x, 44+y, "Last Month");
+    display->drawString(0+x, 16+y, F("Today"));
+    display->drawString(0+x, 30+y, F("Last Week"));
+    display->drawString(0+x, 44+y, F("Last Month"));
     
     // Values
     display->setTextAlignment(TEXT_ALIGN_RIGHT);
@@ -49,13 +49,13 @@ void oledMQTTFrame(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, i
 
 void oledBilibiliFrame(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y) {
     // Title
-    oledTitle(display, "BiliBili", x, y);
+    oledTitle(display, F("BiliBili"), x, y);
 
     // Items
     display->setTextAlignment(TEXT_ALIGN_LEFT);
-    display->drawString(0+x, 16+y, "Follower");
-    display->drawString(0+x, 30+y, "View");
-    display->drawString(0+x, 44+y, "Likes");
+    display->drawString(0+x, 16+y, F("Follower"));
+    display->drawString(0+x, 30+y, F("View"));
+    display->drawString(0+x, 44+y, F("Likes"));
     
     // Values
     display->setTextAlignment(TEXT_ALIGN_RIGHT);
@@ -66,11 +66,17 @@ void oledBilibiliFrame(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t
 
 void oledOsFrame(OLEDDisplay *display, OLEDDisplayUiState* state, int16_t x, int16_t y) {
     // Title
-    oledTitle(display, "INFO BOARD", x, y);
-    display->setTextAlignment(TEXT_ALIGN_LEFT);
+    oledTitle(display, F("INFO BOARD"), x, y);
 
-    // Version
-    display->drawString(0+x, 16+y, "Ver: " + Board.Version);
-    display->drawString(0+x, 30+y, "IP : " + Board.ip.toString());
-    display->drawString(0+x, 44+y, "Mem: " + (String)(80.0-ESP.getFreeHeap()/1024.0) + "/80 kB");
+    // Items
+    display->setTextAlignment(TEXT_ALIGN_LEFT);
+    display->drawString(0+x, 16+y, F("Ver: "));
+    display->drawString(0+x, 30+y, F("IP : "));
+    display->drawString(0+x, 44+y, F("Mem: "));
+
+    // Values
+    display->setTextAlignment(TEXT_ALIGN_RIGHT);
+    display->drawString(120+x, 16+y, Board.Version);
+    display->drawString(120+x, 30+y, Board.ip.toString());
+    display->drawString(120+x, 44+y, (String)(ESP.getFreeHeap()) + " byte");
 }
\ No newline at end of file
diff --git a/lib/utils/utils.cpp b/lib/utils/utils.cpp
index 41bd54f..cf3888d 100644
--- a/lib/utils/utils.cpp
+++ b/lib/utils/utils.cpp
@@ -124,8 +124,8 @@ static String followerUrl = "http://api.bilibili.com/x/relation/stat?vmid=" + UI
 static String viewAndLikesUrl = "http://api.bilibili.com/x/space/upstat?mid=" + UID;
 static String webViewerUrl = "https://api.foolishfox.cn/data/board.json";
 
-static const char UserAgent[] PROGMEM = "UserAgent";
-static const char Cookie[] PROGMEM = "Cookie";
+const char UserAgent[] PROGMEM = "UserAgent";
+const char Cookie[] PROGMEM = "Cookie";
 
 static WiFiClient client;
 std::unique_ptr<BearSSL::WiFiClientSecure>clientSecure(new BearSSL::WiFiClientSecure);
@@ -136,8 +136,10 @@ static void getFollower() {
     http.begin(client, followerUrl);
 
     int resCode = http.GET();
+    
     if( resCode == 200 ) {
         String resBuffer = http.getString();
+        Serial.println(resBuffer);
         DeserializationError error = deserializeJson(jsonBuffer, resBuffer);
 
         if( error ) {
@@ -148,7 +150,7 @@ static void getFollower() {
 
         follower = jsonBuffer["data"]["follower"];
     } else {
-        Serial.printf("[HTTP] GET Follower failed, error: %d\n", resCode);
+        Serial.printf_P(PSTR("[HTTP] GET Follower failed, error: %d\n"), resCode);
     }
 
     http.end();
@@ -165,6 +167,7 @@ static void getViewAndLikes() {
     int resCode = http.GET();
     if( resCode == 200 ) {
         String resBuffer = http.getString();
+        Serial.println(resBuffer);
         DeserializationError error = deserializeJson(jsonBuffer, resBuffer);
 
         if( error ) {
@@ -176,7 +179,7 @@ static void getViewAndLikes() {
         likes = jsonBuffer["data"]["likes"];
         view = jsonBuffer["data"]["archive"]["view"];
     } else {
-        Serial.printf("[HTTP] GET View & Likes failed, error: %d\n", resCode);
+        Serial.printf_P(PSTR("[HTTP] GET View & Likes failed, error: %d\n"), resCode);
     }
 
     http.end();
@@ -190,6 +193,7 @@ static void getWebView() {
     int resCode = https.GET();
     if( resCode == 200 ) {
         String resBuffer = https.getString();
+        Serial.println(resBuffer);
         DeserializationError error = deserializeJson(jsonBuffer, resBuffer);
 
         if( error ) {
@@ -202,7 +206,7 @@ static void getWebView() {
         weekView = jsonBuffer["week"];
         monthView = jsonBuffer["month"];
     } else {
-        Serial.printf("[HTTP] GET Web View failed, error: %d\n", resCode);
+        Serial.printf_P(PSTR("[HTTP] GET Web View failed, error: %d\n"), resCode);
     }
 
     https.end();