It will make the procedure simpler. You can use a hairdryer at home, but you'll need to make or have on hand a special nozzle to gently heat and concentrate the heat flow where it's needed.

Away from the FFC cables or buttons, pick the far edge. Avoid using a lever or any other force to separate objects that could harm the components inside.
Samsung Galaxy J4 SM-J410f (Samsung Galaxy J4 Plus , J410f Disassembly/Repair Guide with Step-by-Step Instructions and Tools List.

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This article outlines the entire disassembly and assembly process for the Samsung Galaxy J4+ so that anybody can perform the necessary repairs: screen replacement, battery replacement, charging connector, headset, speaker, and microphone.

Our crew disassembles a brand-new model that has just hit the market in its entirety in less than 10 minutes.
As always, if you have any questions or concerns about this repair or any other Samsung device, please leave a comment below and I would be happy to respond to all of you.

Disassembly/Repair of the mobile device Samsung Galaxy J4 Plus (2018) SM-J415 (Samsung SM-J415F/DS (Global); Samsung SM-J415FN/DS (Europe); Samsung SM-J415G/DS (LATAM)), with an explanation of each stage and the necessary equipment.

Before You Begin

Before starting the disassembly process, gather the necessary tools and materials:

1. Tool Kit: A precision screwdriver set with various screwdriver heads, including Phillips and Torx.
2. Opening Tools: Plastic pry tools, spudgers, or guitar picks to safely separate the phone's components.
3. Heat Gun or Hair Dryer: Optional, but helpful for softening adhesive seals.
4. Container: Small containers or compartments to organize and store screws and small parts.

Step-by-Step Disassembly Guide

Step 1 Power Off and Remove SIM Tray

Ensure your Samsung Galaxy J4 Plus is powered off, then eject the SIM card tray using the SIM ejector tool.

Step 2 Remove Back Cover

1. Use a heat gun or hair dryer to warm the edges of the back cover and soften the adhesive.
2. Insert a plastic pry tool or guitar pick between the back cover and the frame.
3. Gently slide the tool around the edges to loosen the adhesive.
4. Carefully lift off the back cover once the adhesive is sufficiently loosened.

Step 3 Disconnect Battery Connector

Locate the battery connector near the bottom of the phone's motherboard. Using a plastic spudger or tweezers, gently disconnect the battery connector to prevent any power flow during disassembly.

Step 4 Remove Rear Camera Module

1. Identify the rear camera module at the top of the phone's motherboard.
2. Unscrew any screws securing the camera module using the appropriate screwdriver.
3. Carefully lift the camera module off the motherboard and set it aside.

Step 5 Disconnect Flex Cables and Remove Motherboard

1. Identify and disconnect all flex cables connected to the motherboard, including display, charging port, and other connectors.
2. Unscrew the screws securing the motherboard to the frame.
3. Lift the motherboard out of the frame carefully, ensuring no cables are still attached.

Step 6 Remove Front-Facing Camera and Other Components

1. Locate the front-facing camera module at the top of the phone's display assembly.
2. Unscrew any screws securing the camera module.
3. Disconnect any flex cables connected to the front-facing camera and lift it out of the assembly.
4. Repeat this process for other components such as the earpiece speaker, proximity sensor, and ambient light sensor if necessary.

Step 7 Separate Display Assembly from Frame

1. Heat the edges of the display assembly to soften the adhesive.
2. Insert a plastic pry tool or guitar pick between the display assembly and the frame.
3. Gently slide the tool around the edges to loosen the adhesive.
4. Carefully lift the display assembly off the frame once the adhesive is sufficiently loosened.

Step 8 Clean and Perform Maintenance

With the Samsung Galaxy J4 Plus disassembled, take the opportunity to clean the components and perform any necessary maintenance or repairs. Replace any damaged parts as needed.

Conclusion

Disassembling the Samsung Galaxy J4 Plus requires patience, precision, and the right tools. By following this step-by-step guide, you can safely and effectively take apart your device for repairs, maintenance, or customization. Remember to proceed with caution and take your time to avoid damaging any components. If you're unsure about any step, consult professional repair guides or consider seeking assistance from a qualified technician. With the right approach, you can confidently tackle any disassembly task and keep your Samsung Galaxy J4 Plus in optimal condition for years to come.