How to Type Symbols Using the ALT Key. In Windows, the key combined with numeric codes can access characters that aren't readily available on a normal keyboard. While Alt codes don't exist on Mac computers, there are a variety of Option.
To obtain an ALT Character: Make certain that the Num Lock key has been pressed to activate the numeric key section of the keyboard. Depress the Alt key. While the Alt key is depressed, type the proper sequence of numbers (on recognize all Alt characters.
Did you know about this hidden menu on Samsung Galaxy smartphones? You can use it to test different aspects of your phone like if you think your LCD/touchscreen is not working properly, LED indicator, vibration, cameras, etc.