Samsung R225 User Manual (ENGLISH) - Page 66
SMS Short Message Service - unlock code
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Glossary Multiparty Calling Ability to establish a conference call involving up to five additional parties. Phone Password Security code used to unlock the phone when you have selected the option to lock it automatically each time it switches on. PIN (Personal Identification Number) Security code that protects the phone/SIM card against unauthorised 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. Glossary 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 travelling for example). 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. SMS (Short Message Service) Network service sending and receiving messages to and from another subscriber without having to speak to the correspondent. The message created or received (up to 160 characters long) can be displayed, received, edited or sent. 122 123