User's Manual

E 52RCT E ng. Manual v.1.10 (H/W v.1.0) Page 79
PIN (Personal Identification Number)
Security code protects the phone against unauthorized use. The PIN is supplied by the service
provider with the SIM card. It may be a four to eight-digit number and can be changed, as
required.
PUK (PIN Unblocking key)
Security code used to unlock the phone when an incorrect PIN has been entered three times in
succession. The eight-digit number is supplied by the service provider with the SIM card.
Roaming
Use of your phone when you are outside your home area (when traveling for example)
SDN ( Service Dialing Numbers)
Telephone numbers supplied by your network provider and giving access to special services,
such as voice mail, directory inquiries, customer support and emergency services
SIM (Subscriber Identification Module)
Card containing a chip with all the information required to operate the phone (network and
memory information, as well as the subscriber’ s personal data). The SIM card fits into a small
slot on the back of the phone and is protected by the battery.
After 3 times
incorrect PIN
After
10
times
incorrect PUK
SIM will be
blocked