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I spilt sweet tea onto my phone without realizing and it sat in the tea for maybe 10 minutes. It spilt near the buttons and speaker and no every time I try to turn it on, it doesn’t. The power button and button don’t work but my volume does. Help me please, I don’t know how to fix it. It only turns on when I charge it or get a notification and I’ve let it sit in rice for an hour.

Get it out of the rice . That does nothing . Next stop trying to turn it on. What you need to do is take the phone apart and clean it . the tea will cause the phone to corrode and that will cause shorts . So use this guide to tear down the phone Samsung Galaxy S6 Teardown once its torn down clean every connection with a soft toothbrush and ip alcohol. As well clean the logic board; use a 99% isopropyl alcohol for all cleaning. Now is the time to start drying out the phone. Set the screen in a desiccant or silica gel leave it in for several days moving it from time to time to get the max effect from the desiccant. Use a blow dryer on a low heat setting to dry the rest of the phone. Only use a hair dryer once you have cleaned the phone completely with the alcohol. Do not attempt to dry the phone if it’s still wet with water with the blow dryer as this only spreads the water. Replace the battery with a new one considers the old ones done. Clean again with isopropyl alcohol let dry and when you think everything is clean and dry reassemble the phone (make sure to clean the contacts on the screen after removing from the desiccant). Once you’ve reassembled the phone it’s time to power it on. Hold your breath and hope for the best You may also find this guide helpful Electronics Water Damage Hope this helps

Basically there is a water in your phone. If you are not a tech i would suggest to visit a store to avoid further damage to your phone, as samsung S6 needs to be open from back side. There will be corrosion near your connector which makes problem to the boards. You need to clean the mother board and connector with isoprophyly alcohol. Hope this help!