diff --git a/app/src/main/cpp/PhoneDevice.cpp b/app/src/main/cpp/PhoneDevice.cpp
index 2dc682df..3ab9e626 100644
--- a/app/src/main/cpp/PhoneDevice.cpp
+++ b/app/src/main/cpp/PhoneDevice.cpp
@@ -395,6 +395,14 @@ bool CPhoneDevice::QuerySystemProperties(std::map<std::string, std::string>& pro
             fs::space_info si = fs::space("/data");
             it->second = std::to_string(si.available);  // Unit: M
         }
+        else if (it->first == PROP_FREE_ROM_PERCENT)
+        {
+            fs::space_info si = fs::space("/data");
+            double fr = ((double)si.available * 100.0f) / ((double)si.capacity);
+            char buf[12] = { 0 };
+            snprintf(buf, sizeof(buf), "%d%%", (int)fr);
+            it->second = buf;
+        }
         else if (it->first == PROP_TOTAL_ROM)
         {
             fs::space_info si = fs::space("/data");
@@ -402,12 +410,19 @@ bool CPhoneDevice::QuerySystemProperties(std::map<std::string, std::string>& pro
         }
         else if (it->first == PROP_FREE_MEMORY)
         {
-            fs::space_info si = fs::space("/data");
             it->second = std::to_string(android_os_Process_getFreeMemory());  // Unit: M
         }
+        else if (it->first == PROP_FREE_MEMORY_PERCENT)
+        {
+            long fm = android_os_Process_getFreeMemory();
+            long tm = android_os_Process_getTotalMemory();
+            double fmp = ((double)fm * 100.0f) / ((double)tm);
+            char buf[12] = { 0 };
+            snprintf(buf, sizeof(buf), "%d%%", (int)fmp);
+            it->second = buf;  // Unit: M
+        }
         else if (it->first == PROP_TOTAL_MEMORY)
         {
-            fs::space_info si = fs::space("/data");
             it->second = std::to_string(android_os_Process_getTotalMemory());  // Unit: M
         }
         else if (it->first == (PROP_CHARGING_VOLTAGE))