Every Samsung phone has secret cheat codes, and it's a shame that more people don't know about them. Type these and see what happens.

There's a hidden language that's part of the GSM standard that can unlock hidden features on your smartphone. You can dial codes to check your bill, data usage, forward calls, hide your caller ID, and ...

If you make a lot of international calls with your iPhone, the “Dial Assist” function could be helpful. This function ensures that the necessary country codes are automatically added when dialing ...