W SIM: Subscriber Identity Module, Willcom, Personal Handy Phone System

SIM Lock: GSM, Mobile Phone, Subscriber Identity Module

MSISDN: Universal Mobile Telecommunications System, Subscriber Identity Module, Telephone number portability, International

Personal Handy Phone System: System, Mobile Network, MHz, Cordless Telephone, Digital Enhanced Telecommunications

Gemalto: Application software, Managed services, Subscriber Identity Module, Smart card, Schlumberger, France Télécom, EMV