diff --git a/overlay/frameworks/base/core/res/res/values/config.xml b/overlay/frameworks/base/core/res/res/values/config.xml
index e7cff43..48f1594 100644
--- a/overlay/frameworks/base/core/res/res/values/config.xml
+++ b/overlay/frameworks/base/core/res/res/values/config.xml
@@ -373,4 +373,7 @@
     <!-- Screen off delay -->
     <integer name="config_screen_off_delay">0</integer>
 
+    <!-- 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 188e309..91263ee 100644
--- a/system.prop
+++ b/system.prop
@@ -96,3 +96,8 @@ ro.vendor.qti.va_aosp.support=1
 
 # Zygote
 persist.device_config.runtime_native.usap_pool_enabled=true
+
+# ZRAM writeback
+ro.zram.mark_idle_delay_mins=60
+ro.zram.first_wb_delay_mins=180
+ro.zram.periodic_wb_delay_hours=24