diff --git a/modemband/files/usr/bin/modemband.sh b/modemband/files/usr/bin/modemband.sh
index 3935fee6..91771996 100644
--- a/modemband/files/usr/bin/modemband.sh
+++ b/modemband/files/usr/bin/modemband.sh
@@ -184,6 +184,11 @@ if [ -z "$_DEVICE" ]; then
 		echo "No supported modem was found, quitting..."
 	fi
 	exit 0
+else
+	_DEVICE1=$(uci -q get modemband.@modemband[0].set_port)
+	if [ -n "$_DEVICE1" ]; then
+		_DEVICE=$_DEVICE1
+	fi
 fi
 if [ ! -e "$_DEVICE" ]; then
 	if [ "x$1" = "xjson" ]; then
diff --git a/modemband/files/usr/share/modemband/12d11506 b/modemband/files/usr/share/modemband/12d11506
index 0a129b49..9f0f2086 100644
--- a/modemband/files/usr/share/modemband/12d11506
+++ b/modemband/files/usr/share/modemband/12d11506
@@ -23,5 +23,9 @@ setbands() {
 	else
 		HEX=$(bandstohex "$BANDS")
 	fi
-	[ "$HEX" != "0" ] && sms_tool -d $_DEVICE at "at^syscfgex=\"030201\",3FFFFFFF,2,4,$HEX,,"
+	if [ "$HEX" != "0" ]; then
+		O=$(sms_tool -d $_DEVICE at "at^syscfgex?")
+		MODE=$(echo "$O" | awk -F[:,] '{print $2}' | xargs)
+		sms_tool -d $_DEVICE at "at^syscfgex=\"${MODE:-030201}\",3FFFFFFF,2,4,$HEX,,"
+	fi
 }