diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index 50411669..b4b8188a 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -254,4 +254,7 @@
           manually by the user. Off by default, since the expected haptic feedback may not be
           available on some devices. -->
     <bool name="config_enableHapticTextHandle">true</bool>
+
+    <!-- Enable Zram writeback feature to allow unused pages in zram be written to flash. -->
+    <bool name="config_zramWriteback">true</bool>
 </resources>