in my project i remove the battery of my cellphone and connected it directly to 7805. But then realized when a power interruption has been occured...my pic system booted up but the cellphone remains off...it requires to press the "on" button of the unit.
my problem is what can i do to the cellphone to be able to boot up automatically when the power comes back...
my idea is to put a battery back up on it...but i dont know how...can anyone show me a simple circuit for this...thanks a lot.