SETTING THE RECEIVER VOLUMEUsing the Mobile PhoneHAPPY28Setting the receiver volumeAdjust the receiver volume of the mobile phone while a call is in progress:1. Use the Navigation keys / to raise or lower the volume. CAUTION! Risk of damage to hearing!Listening at full volume for a longer period could cause hearing damage. Avoid telephoning with the receiver at full volume.Key lockThe key lock function is intended to prevent other functions being activatedinadvertently.1. Press and hold the Navigation key for 2 seconds to switch thekey lock on.2. Press and hold the Navigation key again for 2 seconds to switchthe key lock off.Calls can be received and taken on the phone as normal even when thekey lock is activated. Incoming calls and text messages are indicated bythe respective ringing tone set and incoming calls can be taken by pressing the Call key .TorchYou can use the mobile phone as a torch. An LED is provided on the bottom of the mobile phone which can be switched on.1. Press and hold the key for 2 seconds. The LED lights up.2. Press and hold the key for 2 seconds again. The LED goes out.