TracFone is the 6th largest mobile network operator in the United States. It allows its customers to purchase airtime usage when they purchase phones that companies like Nokia, LG, and Motorola make. A TracFone customer has to activate the cell phone before using it. It can be activated via the TracFone website or TracFone customer …
A TIMSI, or Temporary International Mobile Subscriber Identity, number is a random number that is created from a telecommunications subscriber’s IMSI number in order to provide additional security. While an IMSI is unique to each subscriber and is a permanent number that can be used to track a subscriber or interfere with his/her services, a …
UMTS is an abbreviation for Universal Mobile Telecommunications System. It is one of the third-generation (3g) cell phone technologies quickly developing today. UTMS is also referred to as the 3GSM so as to emphasize the coalition between 3G technology and GSM standard. In theory, the UTMS, using W-CDMA, is supposed to be able to transfer …
As technology has improved over the past few decades, cell phones have only gotten better and better.Though most people do not stop to consider the idea, it is still an amazing feat even today that what was once only an idea presented in movies and novels, has now become our number one modern-day communication device. …
The SCM (Station Class Mark) is a 4 bit number which holds three different pieces of information. Your cellular telephone transmits this information (and more) to the cell tower. Bit 1 of the SCM tells the cell tower whether your cellphone uses the older 666 channel cellular system, or the newer 832 channel cellular system. …
Owning a Blackberry enables its owners to do much more than they could ever accomplish with a basic cell phone. However, one of the most popular features that have carried over from basic cell phone to the BlackBerry is the ability to add ring tones. In earlier models adding ring tones to your Blackberry was …
In the following listings, "xxx" means that the same number is used as a constantly busy number in many different prefixes. In most of these, there are some exchanges that ring busy and some exchanges that are in normal use. ALWAYS test these numbers at least three times during normal business hours before using as …
The MIN (Mobile Identification Number) is a number that uniquely identifies a mobile telephone subscriber. MINs are 34-bits in length. The first 10 bits are sometimes known as MIN2, while the last 24 bits are referred to as MIN1. Together they are simply known as the MIN. In the United States, the MIN is derived …
Tumbling exploits a weakness in the AMPS/NAMPS roaming system. In tumbling, you first configure the SIDH in your mobile telephone to pretend to be from another cellular carrier. If you are in Colorado, for example, you would configure your mobile telephone as if it were subscribed to a cellular carrier in Texas. Next, you modify …
Many wireless providers across the globe, including AT&T/Cingular, T-Mobile, Vodafone, and Verizon sell Blackberries. When these companies sell a BlackBerry, they do so at a discount in order to attract customers. The providers then make up the lost profits over the lifetime of their contract with the customer. To protect those profits, the wireless providers …