diff --git a/sleepwalk b/sleepwalk
index a87fb41..cdb93cd 100644
--- a/sleepwalk
+++ b/sleepwalk
@@ -7,6 +7,7 @@ SLEEP_MAX_SECS=600
 WAKE_SECS=35
 LOCK_DIR="/tmp/sleepwalk"
 CPU_STATE=1
+THRESHOLD="15.00"
 
 set_cpu_offline() {
         if [ $CPU_STATE -eq 1 ]; then
@@ -107,8 +108,38 @@ is_screen_on() {
         return "$(cat /sys/class/backlight/backlight/bl_power)"
 }
 
+network_activity() {
+	for n in $(seq 3)
+	do
+		for i in wwan0 wlan0
+		do
+			A=$(ifstat -i $i 1 1 | tail -n1)
+			RX=$(echo $A | awk '{print $1}')
+			TX=$(echo $A | awk '{print $2}')
+
+			if [ "$RX" = "n/a" ] || [ "$TX" = "n/a" ]
+			then
+				return 1
+			fi
+
+			for v in $RX $TX
+			do
+				C=$(echo $v $THRESHOLD |
+					awk '{if ($1 > $2) print "y"; else print "n"}')
+
+				if [ "$C" = "y" ]
+				then
+					return 0
+				fi
+			done
+		done
+	done
+
+	return 1
+}
+
 can_suspend() {
-        ! ( is_inhibitor_active || is_screen_on || is_charging )
+        ! ( is_inhibitor_active || is_screen_on || is_charging || network_activity )
 }
 
 led_sleep() {