A method for power management of a smart phone. The method comprises steps of
resetting
the smart phone, searching for network service, operating the mobile phone system
in standby mode and a PDA system in normal mode when connected to a network, switching
the mobile phone system to connection mode when establishing communication with
a remote terminal, switching the mobile phone system to sleep mode when the mobile
phone system has been idle for a first time period, switching the PDA system to
sleep mode when the PDA system has been idle for a second time period, and implementing
power detection to switch the mobile phone and PDA system to off mode when the
detected power is lower than a first and second threshold respectively.
