An ordinary smartphone user does not even suspect that with the help of special key combinations one can get a variety of information and make significant changes in the functionality of a mobile phone.
For example, using these codes, one can find out if call forwarding is enabled on your phone:
1. *#21# – allows you to get information about enabled call and message forwarding.
2. *#62# – this code will show to whom the redirect is going. Most often these are teleoperators, but it will never be superfluous to double-check.
Disable call forwarding. Code ##002# disables any call forwarding. Thus, only you will receive calls. You need to use it if suddenly you find suspicious numbers that definitely should not be connected.