Dialer codes are entered into the stock (blue) dialer of your Android device. Typically, they start with *#*# and end with #*#*. Pro users do not have to copy/paste these codes into the dialer; you can just touch them from our notification. However, for free users, after you click on a dialer code from our app, you have to press and hold on the dialing space within the stock dialer until the "paste" menu appears. Once you hit paste, the dialer code actions will occur. It may take a few seconds before they are triggered, so please be patient. Also, entering multiple codes rapidly will definitely delay their response.