How do I get my phone to power on after wasting Heineken

The best course of action after an electronic device is to immediately turn the device off and remove the battery if possible Samsung Galaxy S III Battery Replacement Guide. As soon as possible place the phone in a bag of dry, uncooked rice or descant to draw the water out over a period of a week or more. I am unfamiliar with the effects of beer on the internals of electronics, however any liquid can cause components to short out. After a week has passed, attempt to charge and power on the device again. Depending on the damage that the swim in beer did to the electronics repair could require more time to dry, or replacing internal components.

you can also use a can of canned air to blow/dry the liquid faster...just dont get the nozzle too close.