Disassembly/Repair of the mobile device ZTE Blade A7s with each step description and the required set of tools.

⚠ Before disassembling, do not forget to turn your phone off.

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 SIM and Memory card (Micro SD) 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 cables and fragile buttons are straightforward to damage.

⚠ Pay attention to the fingerprint sensor cable located on the inside.

Pry at the edges and turn over the cover to disconnect battery and fingerprint sensor connectors.

⚠ Be careful with the fingerprint sensor cable.

Disconnect the fingerprint sensor connector.

Please note the motherboard is still powered. Use a non-metal or plastic tool.

Disconnect the battery connector as soon as possible.

ℹ️ The ZTE Blade A7s model has a battery Li3839T44P8h866445 with 4000 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.

Using a screwdriver (Philips 1.5 mm PH000), unscrew 8 screws.

Remove the cover with the loudspeaker.

Carefully, preferably from the edge, disconnect the connectors and remove the inter-board cable connecting the mainboard to the daughterboard (also known as the sub-board).

⚠ 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.

ℹ️ An arrow on the FFC cable (flexible flat cable) indicates its correct position.

Disconnect the coaxial cable connector. Unstick the vibration motor.

Remove the sub-board. It is glued to the frame with metalized tape, so to facilitate the process, the sub-board can be heated a bit.

ℹ️ The sub-board contains a charging port (Micro-USB), microphone, vibration motor (wired), spring contacts for the speaker, and an antenna unit.

⚠ It is not necessary to insert the tool underneath when removing the sub-board. Internal components could be damaged.

Pry up the connectors of the display module cable, inter-board cable.

⚠ 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.

Disconnect the connector and remove the front (selfie) camera.

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