Huawei FC612E User Manual - Page 13

PIN and PUK The personal identification number (PIN) can protect your SIM card against unauthorized use. The PIN unblocking Key (PUK) is used to unlock the blocked PIN. If you enter wrong PINs consecutively for specified times, the SIM card is blocked. In this case, you need to enter the PUK to unblock the SIM card. The PIN and the PUK are provided with your SIM card. For details, contact your service provider. Keypad Lock In standby mode, press and hold the * key to lock the keypad. If the keypad is locked, unlock the keypad first. Otherwise, you can only dial emergency numbers and answer incoming calls. In standby mode, press the OK key and then the * key to unlock the keypad. Warnings and Precautions This section contains important information pertaining to the operating instructions of your device. It also contains information about how to use the device safely. Read this information carefully before using your device. Electronic Device Power off your device if using the device is prohibited. Do not use the device when using the device causes danger or interference with electronic devices. Medical Device z Follow rules and regulations set forth by hospitals and health care facilities. Do not use your device when using the device is prohibited. z Pacemaker manufacturers recommend that a minimum distance of 15 cm be maintained between a device and a pacemaker to prevent potential interference with the 11