Open the back cover.
Peel back the protective layer.
Disconnect the battery connector. The battery model of Acer Iconia Tab A1-811 is AC13F8L.
We strongly recommend disconnecting the connector to avoid a possible short circuit during disassembly.
Using a screwdriver (Phillips 1.5 mm PH000), unscrew long 2 bolts and remove the bracket holding the headphone jack/socket.
Pry up the connector and remove the small PCB with a headphone jack/socket and charging port.