Sonim XP3340 Z1 SENTINEL User Manual page 25

Keypad key Operations
Press and hold to display '+' used for dialing an international number, while in
standby mode.
Press and hold to lock the keypad.
•
• With backlight on, press LSK followed by this key to unlock the keypad.
• When entering text, press to display special characters, for example, period,
comma, and so on. Press and hold to display the text input languages.
• Press and hold in standby mode to switch between Meeting on/off modes.
When entering text, press to switch between lower case, upper case or
•
numeric. Press and hold to enable T9 mode.
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