Mobile technology has advanced rapidly to the point of almost everyone on the planet being dependent on the cellphone. From keeping abreast with business through apps, to entertainment and social media. It is the phone whose platform is used the most. But! While using our phones for everything, how much do we actually know about the device itself? There are several codes in a phone that only a few people know. This list of 30 secret cellphone codes can help you perform certain activities or acquire information about your phone faster. These codes may not work on all phones as it depends on the features provided by your service provider.