Disassembly of the mobile device Acer Liquid S2 S520 with each step description and the required set of tools.

Unstick the cover on the front upper side. This notch hides two screws securing the housing.

Using a screwdriver (Philips 1.5 mm PH000), unscrew two screws securing the back cover.

Use the ejection tool (aka Needle) or Paperclip. Push the tip all the way into the hole until the tray ejects, and then pull the tray of the SIM card out.

⚠️ Pay attention! The tool must be inserted into a hole on the edge of the phone's housing. Do not press too hard. It may break the tray eject mechanism.

Using a spudger or a plastic pick, carefully, around the edge, detach the back cover clips, and remove it.

Do not insert the tool deeply or bend it. Otherwise, the housing may be tampered with or damaged.

⚠️️ Be careful when opening the cover from the volume and power buttons side. Thin cable and fragile buttons are straightforward to damage.

The back cover may be glued to the battery. So we can heat the cover with a heat gun a bit to facilitate the process.

ℹ️️ The Acer Liquid S2 S520 model has a battery BAT-M10 (1ICP5/58/94) with 3000 mAh capacity (aka rechargeable battery).

⚠️️ It is highly recommended to disconnect the connector to avoid possible short circuits during disassembly.

Also, try not to use a metal tool to disconnect the rechargeable battery connector or do it carefully.

Pry around the edges. Disconnect attached clips by moving the opening tool along the edge.

Carefully remove the middle frame. 

Pry up the connector and remove the flashlight. 

Disconnect the connector and remove the rear camera. Be careful! The camera may be glued to the display module frame.

Pry up the connectors for display, touchscreen, sensors, loudspeaker, front camera.

⚠️️ Be careful when removing the cables from the connectors. The cables are pretty thin, and it is easy enough to break them or damage the contact tracks inside.

Using a screwdriver (Philips 1.5 mm PH000), unscrew five screws securing the circuit board.

Carefully remove the printed circuit board. There is no need to use a lever or try to reach the circuit board by force. Make sure that nothing is getting in the way or holding the circuit board.

⚠️️ Do not bend the circuit board when removing it or push tools under it. Unbeknownst to yourself, you can damage components or cables from the inside.

Pry at the edges and remove the front (selfie) camera. The camera may be glued a bit so be careful.

ℹ️️ In the display frame remained: the earpiece speaker, battery, vibration motor, two loudspeakers.