Mobile Phone Technology

Phone Numbers
image ©play.google.com

How do we identify the mobile device? - a phone number? there are various numbers within the operation of a mobile network that are important to the customer and network.

  • International Network Operator is the number that identifies the Mobile Network Operator that your device is connected to. In the UK the country code is 234 or 235; and the mobile network operators are identified by a further two digit number, the most notable being :
    • EE is 30 or 33
    • VodafoneThree is 15 or 20
    • O2 is 10
  • Equipment Number - each piece of equipment connecting to the mobile phone network has a unique International Mobile Equipment Identity (IMEI). Not only does this allow networks to identity the phone (say) it also allows stolen or rogue pieces equipment to be identified and refused access to the network
  • Subscriber Identity Module(SIM) Card will also have a unique number, called the IMSI (International Mobile Subscriber Identity). This is a 15 digit number and includes the country code (234 or 235 in UK) and the mobile network code (eg. 15 for Vodafone). It is used to identify the subscriber on the network and is the key to accessing the services provided on the network
  • Phone Number - this is the number used to access the device. In the UK these are 11 digit numbers starting with 07 .... Often referred to by the International format for the number as +447 ...