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Oppo a72 disassembly

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Introduction

The OPPO A72, a mid-range smartphone released in 2020, quickly garnered attention for its balanced features, decent performance, and appealing design. As with many smartphones, users and technicians alike may find themselves needing to disassemble the device for various reasons—whether to replace a damaged component, upgrade certain parts, or simply explore the internal architecture. This comprehensive review will guide you through the process of disassembling the OPPO A72, covering each step in detail, discussing the tools required, potential challenges, and tips to avoid common pitfalls. We will also delve into the device’s hardware design, component layout, and build quality to give you a deeper understanding of what makes the OPPO A72 tick.

Tools Required for Disassembly

Before embarking on the disassembly process, it is crucial to gather the necessary tools. Here’s a list of tools that will aid in a smooth and successful teardown of the OPPO A72:

  1. Plastic Pry Tools: These are essential for separating the back cover from the frame without damaging the plastic or glass components.
  2. Phillips Screwdriver (Size #00): Required for unscrewing the tiny screws that hold the phone’s internals together.
  3. Tweezers: Handy for handling small screws, connectors, and other delicate parts.
  4. Suction Cup: Useful for lifting the screen assembly or back cover without applying excessive force.
  5. SIM Ejector Tool: To remove the SIM card tray before disassembly.
  6. Spudger: A non-conductive tool that is crucial for safely disconnecting ribbon cables and other connectors.
  7. Heat Gun or Hair Dryer: To soften the adhesive used around the screen or back cover, making it easier to remove.

Step-by-Step Disassembly Guide

1. Powering Off and Preparing the Phone

Before disassembling any electronic device, it is vital to power it off to prevent any electrical damage or short circuits. Ensure that the OPPO A72 is completely turned off. Additionally, remove the SIM card tray using the SIM ejector tool. This step is crucial because it avoids damage to the tray or the internal SIM connectors during the disassembly process.

2. Removing the Back Cover

The OPPO A72’s back cover is typically secured with clips and adhesive, making it one of the trickiest parts to remove. Here’s how to do it:

3. Disconnecting the Battery and Other Connectors

With the back cover removed, you’ll have access to the phone’s internals. The first and most important step is to disconnect the battery to ensure safety.

4. Removing the Battery

In many smartphones, including the OPPO A72, the battery is glued in place with adhesive strips. Removing the battery can be challenging, but it’s doable with the right approach.

5. Removing the Motherboard and Other Internal Components

With the battery out of the way, you can now proceed to remove the motherboard and other internal components. This step is crucial if you’re replacing the motherboard, cameras, or other critical parts.

6. Accessing and Removing Other Components

Now that the main components like the battery and motherboard are out, you can access other parts such as the cameras, speaker, vibration motor, and charging port.

Understanding the Internal Architecture

1. Battery Placement and Design

The OPPO A72 houses a 5000mAh battery, which is one of the key selling points of the device due to its impressive battery life. The battery is centrally located within the device to balance the phone’s weight. It’s a Li-Po (Lithium Polymer) battery, known for its lightweight and high energy density. The adhesive strips used to secure the battery can be quite strong, so removing it requires care and patience.

2. Motherboard Layout

The motherboard of the OPPO A72 is compact yet densely packed with components. It’s designed to house the Qualcomm Snapdragon 665 processor, RAM modules, storage, and various other chips responsible for the phone’s operations. The layout is optimized for efficient heat dissipation, with thermal pads placed strategically on top of heat-generating components.

3. Camera Assembly

The OPPO A72 features a quad-camera setup on the rear, with each camera module individually removable. The main camera sensor is typically the largest and most centrally located, while the auxiliary sensors (ultra-wide, depth, and macro) are positioned around it. The front camera is usually located near the top of the device and is easier to access once the display assembly is removed.

4. Speaker and Charging Port Design

The speaker module and charging port are located at the bottom of the device, attached to a smaller daughterboard. This design allows for easier replacement of these components without needing to replace the entire motherboard. The speaker is encased in a plastic housing to enhance sound output and is connected to the motherboard via a small flex cable.

Potential Challenges and Tips

1. Dealing with Adhesive

One of the most challenging aspects of disassembling the OPPO A72 is dealing with the adhesive used on the back cover, battery, and other components. Here are some tips to make the process easier:

2. Avoiding Damage to Connectors

The ribbon connectors inside the OPPO A72 are delicate and can be easily damaged if not handled correctly.

3. Reassembling the Device

Reassembling the OPPO A72 after disassembly is essentially the reverse of the teardown process. However, it’s important to ensure that all connectors are properly seated, and screws are returned to their original positions.

Potential Pitfalls and Common Mistakes

1. Battery Adhesive

As mentioned earlier, the adhesive securing the battery can be particularly challenging. One common mistake is using too much force when prying the battery out, which can result in bending or puncturing the battery. This is dangerous as it can lead to leaks, fires, or even explosions. Always approach battery removal with caution, using heat to soften the adhesive and working slowly with a plastic pry tool.

2. Misplacing Screws

During disassembly, the screws you remove can be of varying lengths and sizes. Misplacing or mixing up these screws can cause problems during reassembly. For example, using a longer screw in a short screw hole can damage the motherboard or other internal components. To avoid this, it’s recommended to use a magnetic mat or a labeled container to keep track of each screw’s location as you remove them.

3. Damaging Ribbon Cables

Ribbon cables are essential for connecting different components within the phone. They are delicate and can easily be torn or damaged if not handled properly. A common mistake is pulling or tugging on these cables when trying to disconnect them. Instead, use a spudger to gently lift the connectors straight up from their sockets, and be cautious of any cables running beneath components.

4. Skipping Component Tests

After reassembling the phone, it’s vital to test all major components before sealing the device. Skipping this step can result in frustration if something isn’t working correctly after the phone is fully closed up. Testing ensures that all connectors are properly seated and that the device is functioning as expected.

5. Overheating During Adhesive Removal

While using a heat gun or hair dryer to soften adhesive, it’s easy to accidentally overheat the device. This can cause damage to the plastic components or warp the screen. Always use moderate heat and keep the heat source moving to avoid concentrating too much heat in one area. If the adhesive isn’t coming loose, apply more heat gradually rather than increasing the temperature.

Reassembly: A Step-by-Step Guide

Reassembling the OPPO A72 is essentially the reverse of the disassembly process, but it requires just as much care and attention to detail. Here’s a step-by-step guide to ensure you reassemble the phone correctly:

1. Reattaching the Motherboard

2. Replacing the Battery

3. Reinstalling Other Components

4. Testing the Device

Before closing the phone, power it on to test all major components:

5. Reattaching the Back Cover

6. Final Checks

Once the phone is fully reassembled, perform a final check of all functions to ensure everything is working correctly. Make sure there are no loose parts or screws inside the device, and that the back cover is securely attached.

Conclusion

Disassembling the OPPO A72 is a process that requires patience, attention to detail, and the right tools. Whether you’re replacing a damaged component, performing a repair, or simply exploring the internal architecture of the device, following the steps outlined in this guide will help ensure a successful teardown and reassembly.

Throughout the process, it’s important to handle all components with care, especially the delicate ribbon cables and connectors. Avoid rushing the disassembly or reassembly, as this can lead to mistakes or damage to the device. By taking your time and following best practices, you can safely disassemble and reassemble the OPPO A72, gaining a deeper understanding of the phone’s internal design and hardware.

In summary, the OPPO A72 is a well-constructed mid-range smartphone with a thoughtful internal layout that balances performance and functionality. While it may not be as straightforward to disassemble as some other devices, with the right approach, it’s possible to successfully tear down and reassemble the phone without causing damage. Whether you’re a technician, a hobbyist, or a curious user, this guide provides all the information you need to navigate the disassembly of the OPPO A72 with confidence.

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