Updated nmcli with gsm (markdown)

nmcli-with-gsm.md

@@ -22,7 +22,11 @@ mmcli -m 0 | grep "primary port"
 ```
 
 Now we can use **nmtui** to connect 4GNet
-
+or
+```
+sudo nmcli connection up 4GNet  
+sudo nmcli connection down 4GNet
+```
 Here is reference arguments I've used for nmcli
 
 ```