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    • IMEI (International Mobile Equipment Identity)

      IMEI (International Mobile Equipment Identity)

      Each GSM and UMTS mobile phone has a unique IMEI (International Mobile Equipment Identity) number. An IMEI number facilitates an important function – it easily identifies a mobile phone being used on a GSM (Global System for Mobile Communications) network. The IMEI is a useful tool to stop a stolen phone from accessing a network

    • How Do Tracphones Work?

      How Do Tracphones Work?

      As many people are fed up with their cell phone providers, a new trend has opened up for tracphones. A tracphone, or TracFone, is a prepaid phone that gives you the accessibility of a contract plan without the commitment. Tracphones have become much more popular in the past few months as more people are finally

    • How to Unlock a Phone

      How to Unlock a Phone

      Many cell phone users remain confused on what it means to unlock a phone. Most commonly, this term is used to describe the process of removing restrictions placed on using a GSM cell phone by the manufacturer. These restrictions are intended to prevent the mobile phone from being used on competing cell phone carriers or

    • How to Change my PIN and PUK

      How to Change my PIN and PUK

      A PIN, or Personal Identification Number, is a number that is used on some SIM cards to prevent unauthorized use of the cell phone it is located in. PINs are not used by all SIM cards and may need to be setup before they can be used. A PIN is generally between 4 and 8

    • IS-54 and IS-136: TDMA

      IS-54 and IS-136: TDMA

      IS-54 and IS-136 are standards for TDMA American Digital Cellular. Mobile Frequency Range Rx: 869-894; Tx: 824-849 Multiple Access Method TDMA/FDM Duplex Method FDD Number of Channels 832 (3 users per channel) Channel Spacing 30Khz Modulation DQPSK Channel Bit Rate 48.6Kb IS-54 and IS-136: TDMA Security IS-54 and IS-136 use the CAVE (Cellular Authentication, Voice

    • 15 Ways to Improve Your Phone’s Battery Life

      15 Ways to Improve Your Phone’s Battery Life

      Although mobile phones have become almost ubiquitous in modern culture, device manufacturers have yet to solve the problem of significantly improving the battery life of mobile phones significantly. As a result, consumers must seek out methods to manage the overall application and program usage on their cell phones in order to improve the overall life

    • CDMA (Code Division Multiple Access)

      CDMA (Code Division Multiple Access)

      Code Division Multiple Access (CDMA) is a channel transmission standard that allows several transmitters to send information simultaneously over a single communication channel. This ensures that the available bandwidth is used in an optimized manner. It is a form of multiplexing and is used for wireless communication. Radio communication makes use of two resources: frequency

    • How to Update the Blackberry OS

      How to Update the Blackberry OS

      The BlackBerry OS is deployed on mobile devices used in 91 countries across more than 500 service operators. Research In Motion (RIM) developed the operating system since 1999, which allows mobile devices to act as both digital assistants and portable media players depending on the type of device purchased. A common task that arises for

    • MTSO: Mobile Telephone Switching Office

      MTSO: Mobile Telephone Switching Office

      The Mobile Telephone Switching Office, or MTSO, is a system that automatically keeps track of a cell phone user’s relative signal by monitoring readings from cell phone towers near the user. MTSO systems also automatically switch a cell phone’s service from one cell phone tower to another depending on which tower will provide the user

    • GSM (Global System for Mobile Communications)

      GSM (Global System for Mobile Communications)

      The Global System for Mobile Communications (GSM) system is a widely deployed digital mobile telephony standard that is deployed throughout Europe and other locations around the globe. The GSM standard leverages a variant of TDMA (time division multiple access) and is the most deployed of the three competing legacy digital wireless technologies on the market

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