Open the panel on the side of the screen hiding the screws.
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Using the key tool, open the SIM card tray and remove it.
⚠️ Warning!
Do not push too hard this may cause damage.
Disconnect the battery connector. The battery model of Acer Liquid S2 S520 is BAT-M10.
⚠️ Warning!
We strongly recommend disconnecting the connector to avoid a possible short circuit during disassembly.
Using a screwdriver (Phillips 1.5 mm PH000), unscrew 5 bolts in the PCB.
⚠️ Warning!
We are not sure about the Torx screw, this phone has been repaired before.