Disassembly/Repair of the mobile device ZTE Axon 7 Mini (ZTE Axon 7 Mini B2017G) with each step description and the required set of tools.

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.

Unstick the covers hiding the screws securing the back cover.

Using a screwdriver (Phillips 1.5 mm PH #000), unscrew the six screws.

Pry over the edge and remove the cover with antenna tracks.

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.

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

Using a screwdriver (Phillips 1.5 mm PH #000), unscrew the three screws and remove the bracket holding the connectors.

Disconnect the battery connector as soon as possible. It is better to use a non-metal or plastic tool to avoid any damage.

ℹ️ The ZTE Axon 7 Mini model has a battery Li3927T44P8h726044 with 2705 mAh capacity (aka rechargeable battery).

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

Pry up the fingerprint sensor connector and connector of the side buttons cable and remove the back cover.

Disconnect the coaxial cable connector.

Using a screwdriver (Phillips 1.5 mm PH #000), unscrew the three screws securing the sub-board.

Remove the bracket holding the connectors and vibration motor.

Remove the sub-board. It may be glued to the frame or attached with attachments like latches or hooks, so be careful.

ℹ️ The sub-board contains a charging port (Micro-USB), microphone, vibration motor, 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, and coaxial 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 on the motherboard, and remove the front (selfie) camera.

Using a screwdriver (Phillips 1.5 mm PH #000), unscrew the two screws securing the motherboard.

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.

The motherboard, also, may be attached with attachments like latches or hooks, be careful.

⚠️ 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.

In the display frame remained: the earpiece speaker, battery, and coaxial cable.

Using a screwdriver (Phillips 1.5 mm PH #000), unscrew the two screws and remove the flashlight small board and side buttons.