The user can change their phone number by contacting their mobile service provider or landline provider. The phone numbers change the way a person’s phone is accessed and callers will have to dial a new code, which varies depending on the region if the person changes their phone number. This is important because it protects against identity theft and other criminal activities where hackers access a person’s social security number, date of birth, adhering to information from previous addresses to obtain an individual’s current address.