A PIN, or personal identification number, is a four-digit number that must be entered into the keypad to unlock the phone for use when the security feature on the phone is activated. The PIN is built into the phone by the manufacturer.Continue Reading
Setting up a cell phone to be unlocked with a PIN ensures that, if the phone gets lost or stolen, it is no longer usable, and that no one else has access to the personal data stored on the phone. Having unauthorized possession of an unlocked cell phone is likely to let the thief see personal texts, contacts and notes. The person also has easy access to any email accounts, social networking accounts, online shopping accounts and even bank accounts that the cell phone owner may not have logged out of, making it possible for him to change their passwords.
Locking a cell phone with a PIN also stops the inadvertent dialing of a pre-programmed number when the phone is bumped around in someone's pocket or bag. The phone's SIM card can also be locked with a PIN. Some phones are set to erase all information if an incorrect PIN is entered into the phone too many times.Learn more about Mobile
Apple's iOS offers a native blocking feature for users to block unwanted phone calls on their iPhones. To add a contact or phone number to the blocked list, you need to tap the "i" icon next to the person or phone number you want to block to open the contact information screen. Once there scroll to the bottom and tap the Block this Caller button.Full Answer >
Boost cell phone signals by using a signal repeater, installing a femtocell or taking advantage of the Wi-Fi calling feature available on some smartphones through certain carriers. Previously inhabiting a legal gray area, these devices have since gained legal status under regulations adopted by the Federal Communications Commission in 2013.Full Answer >
The easiest way to design one's own cell phone is through the use of an Arduino microcontroller and a GSM Arduino shield. These two components can be combined with user interface components, such as buttons and screens, to create a basic cell phone capable of making calls and text messages.Full Answer >
Verizon Wireless customers can temporarily block a caller by using Verizon's free Call & Message Blocking feature, which lets customers block up to five phone numbers. To permanently block a number requires the FamilyBase service, which has a monthly fee.Full Answer >