User's Manual

101
PUK (PIN Unlocking Key)
Security code used to unlock the phone when an incorrect PIN has
been entered three times in succession. The service provider supplies
the eight-digit number with the UIM card.
Roaming
A service offered by most cellular service providers that allows
subscribers to use cellular service while traveling outside their home
service area. When they are outside their home
service area and come
within range of another cellular system, the ROAM indicator on the
cellular phone will light to show that they are in range.
UIM (User Identity Module)
A credit card-like device capable of storing and transferring
information regarding the card's user to communications devices such
as handheld and car phones, notebook computers, and personal digital
assistants. This information could include how the user would like
their phone calls handled, method of payment, and the user's personal
number. On some phone models, you can copy this information to the
phone's memory.