Disassembly/Repair of the mobile device ZTE Blade S7 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 out. Should do it for each of the SIM and Memory card (Micro SD) trays.

⚠️ 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.

We recommend using a special heating device such as a separator machine, heat gun, or heating mat. It will simplify the process. You can use a home hairdryer, but you will have to make a nozzle by hand or have a suitable one in the kit to gently heat and concentrate the heat flow in the right place.

ℹ️️ The surface of the back cover must be heated to soften the adhesive underneath. The approximate heating temperature is 50° C / 125° F.

Use a thin plastic film or pick for separation. To facilitate the process, you can use isopropyl alcohol. It is often most difficult to pass the tool between the parts to be divided. Choose the far edge from the FFC cables or buttons.

Do not use a lever or any force for separation that could damage the elements inside.

Disconnect the battery connector as soon as possible.

ℹ️️ The ZTE Blade S7 model has a battery Li3925T44P6h54236 with 2500 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 (Phillips 1.5 mm PH000), unscrew 5 short screws and one long screw.

ℹ️️ Be sure to note the location of the screws before disassembling. When assembling the device, screwing the screw in the wrong place may damage the device or its part. To avoid damage, the removed screws and individual pieces (as gaskets or brackets) must be laid out in the appropriate order, or the screws and their holes in the phone must be marked with colored markers.

Remove the cover with antennas. Try to lift the cover by the edges and not push anything between them to not accidentally touch or short-circuit anything on the PCB.

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

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

Remove the loudspeaker assembly with antennas.

Pry up the connectors of the headphone jack socket, display module cable, loudspeaker, touchscreen 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.

Pry up the connector and remove the front and rear cameras.

Using a screwdriver (Phillips 1.5 mm PH000), unscrew 4 screws securing the motherboard.

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.

ℹ️️ In the display frame remained: the earpiece speaker, battery, headphone jack socket, vibration motor.