diff --git a/nmcli-with-gsm.md b/nmcli-with-gsm.md
index 45d65cc..7d4f4e9 100644
--- a/nmcli-with-gsm.md
+++ b/nmcli-with-gsm.md
@@ -133,3 +133,14 @@ proxy.pac-script:                       --
 
 requires all ppp driver in kernel 
 Devices drivers ->Network device support
+
+
+In order to use SIMCOM_SIM7600G-H to call or receive calls
+we have to blacklist some kernel models
+
+```
+$ cat /etc/modprobe.d/blacklist-qmi.conf
+blacklist qmi_wwan
+blacklist cdc_wdm
+```
+