diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index dda498e..5f4ac4d 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -616,4 +616,7 @@
           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>
diff --git a/system.prop b/system.prop
index 28afbb4..46aa3e5 100644
--- a/system.prop
+++ b/system.prop
@@ -190,3 +190,8 @@ persist.vendor.sensors.enable.mag_filter=true
 # WFD
 persist.debug.wfd.enable=1
 persist.sys.wfd.virtual=0
+
+# ZRAM
+ro.zram.mark_idle_delay_mins=60
+ro.zram.first_wb_delay_mins=180
+ro.zram.periodic_wb_delay_hours=24