KTI: How to Check if Call Forwarding is Activated on Your Smartphone
Call forwarding keeps us from missing important calls. Although its activation is not always voluntary. If you want to find out whether this function is activated, you need to dial GSM code "*#21#" and press call button. After that, the status of different types of call forwarding will appear along with the numbers, to which the information is sent. In case you notice any suspicious activity, you can disable all forms of call forwarding at once by using the universal code "##002#".