Xiaomi’s Redmi series smartphones have proven to be reliable, but over time, even high-quality equipment requires maintenance. Disassembly of the Redmi 5 Plus may be needed to replace a broken display, a worn-out battery or clean the speakers from dust. Self-intervention in the internal device of the gadget allows you to save a significant amount on the services of a service center, if you act carefully and consistently.
Before you start dismantling, you need to understand that the body of the model is made of metal with plastic inserts, which requires a special approach when heating. Unlike budget plastic models, here the adhesive layer can be more durable, and screws are hidden under decorative elements. The main risk when disassembling is damage to the plume of the fingerprint scanner, which is attached directly to the back cover. Careful study of the design minimizes the likelihood of failure.
In this article, we will take a closer look at the process of disassembling the Xiaomi Redmi 5 Plus, paying attention to the nuances of working with adhesive joints and fragile components. You do not need complex industrial equipment, a standard set of tools and patience.
Tools and workplace preparation
The success of a smartphone disassembly operation depends 90 percent on proper preparation. You will need not only a toolkit, but also an organized space. The desktop should be clean, well-lit and free of foreign objects that could get lost or damage parts.
To work with the Redmi 5 Plus, you'll need a special kit that includes a suction cup, mediators and screwdrivers. Using inappropriate tools like knives or pins often damages the body and internal plumes. A quality tool reduces the risk of slippage and injury.
- 🔧 Precision screwdrivers (cross-haired) PH000, Torx T5).
- 💨 A hair dryer or thermophen to soften glue.
- 💳 Plastic card or thin mediator.
- 🔍 Lunch or magnifying glass for small parts.
Pay special attention to the choice of suction cups. For metal Xiaomi models, it is better to use a suction cup with a metal ring or a special hook handle, since a regular rubber one may not provide enough adhesion to a smooth surface. If the suction cup breaks, the heating may not be enough.
☑️ Disassembly tools
Removal of the back cover and primary access
The first and most important step is to separate the back cover from the metal body. In the Redmi 5 Plus, the lid is fixed perimeter to a two-piece glue. Before you start, be sure to turn off the device and remove it. SIM-tray to avoid short circuit or mechanical damage.
Heat the body perimeter with a hairdryer. Keep the heat source at a distance of 3-5 cm, evenly warming the edges for 2-3 minutes. The metal gives off heat quickly, so it's important not to overheat one point, but to warm the entire circuit. The temperature should be sufficient to soften the glue, but not melt plastic elements.
⚠️ Warning: Do not heat the central part of the back cover where the cameras and sensors are located. Local overheating can cause the camera modules to fail or the battery to bloat.
Once warmed up, place the suction cup at the bottom of the lid, closer to the center, and pull up to create a gap. Insert the mediator carefully into the resulting gap. Lead the instrument along the perimeter, cutting the adhesive layer. The movements must be sliding, parallel to the plane of the screen, so as not to damage the internal components.
When you take off the lid, be very careful at the top of your smartphone, and there's a fingerprint scanner plume that's glued to the lid, and a sudden jerk can break this thin conductor, and the scanner plume is one of the most vulnerable parts of the design.
The nuances of glue work
Dismantling of the protective panel and battery
When you remove the back cover, you'll see an interior space that's covered by a black plastic panel, which protects the main nodes from dust and fixes the components, and you'll need to dismantle this panel to access the motherboard and battery.
The panel is fixed with a lot of screws of different sizes. Use a magnetic mat or a piece of paper on which you'll spread the screws in order to remove them, marking the zones. If you mess up the screws, you can damage the thread or break through the case. Systematization of the fastener is critical.
With all the screws twisted around and around the camera module, gently lift the panel. Underneath it is the battery and the lower board. To extract the battery in the Xiaomi Redmi 5 Plus often has a special tongue, but if it is not or it broke, use a plastic blade.
- 🔋 Carefully smack the battery with a spatula, starting at the bottom edge.
- 🚫 Never puncture or bend the battery.
- 🧤 Work with gloves so as not to stain the internal components with fat.
If the battery sits very tightly, you can slightly warm the area under it through the open back (if the battery is not yet removed) or use isopropyl alcohol by dripping it under the edge of the battery to dissolve the glue. However, the alcohol should be used extremely carefully, avoiding hitting the screen and electronics.
💡
Before disconnecting the battery plume, be sure to turn off the phone if it has not been done before.Switching off the plug under voltage can cause a surge in current and damage to the power controller on the motherboard.
Replacement of the display and camera module
Replacing the display in the Redmi 5 Plus requires removing the front bezels completely or carefully separating the module from the body, since the screen is glued to a metal frame. In most cases, it is easier to replace the screen with the frame, which eliminates the need to mess with the B-7000 glue.
To replace the camera or speaker, you have to remove the motherboard, it's fixed by screws and plumes, turn off all the connectors, starting with the battery, then the display and the touchscreen, and the motherboard is the most expensive component that requires careful handling.
When you install a new display, make sure that the protective film from the new module is removed and the contact areas are clean. Connect the plumes before clicking, but without undue effort. Assembly is done in the reverse order: first the fee, then the work check, and only then the final sticker.
| Component | Difficulty replacing | Risks. | Time required |
|---|---|---|---|
| Battery | Medium | Bloating, plume damage | 20-30 minutes |
| Display. | Tall. | Breaking new glass, plumes | 40-60 minutes |
| Back cover. | Low. | Scanner plume breaks | 15-20 minutes |
| Camera. | Medium | Dust on the lens, OIS damage | 30-40 minutes. |
Once you've installed the new module, take your time to turn all the screws around. Connect the battery and check the touchscreen, sound and vibration. If everything works correctly, you can complete the assembly. Testing before the final assembly saves time for re-disassembly.
Nuances of work with plumes and connectors
Inside the Xiaomi smartphone, there are many thin connections. The plumes in this model are quite fragile and do not tolerate overburden. When disconnecting the connectors, use a plastic shoulder blade or nail, avoiding metal tools that can close contacts.
Notice the clamping slats. They lock the connectors of the display and the battery on the motherboard. If you forget to set the bar, the connector can move away from the vibration, and the phone will stop responding to touch or turn off. The clamping plates ensure that contact is reliable.
⚠️ Warning: When installing the display plume, make sure it lies flat and full. Incomplete entry of the connector is a common cause of a white screen or a broken touch screen after assembly.
The main button plume (scanner) needs special attention, and it passes through a narrow hole in the body, and when you assemble it, make sure that it is not twisted or screwed, and damage to this plume will cause the unlock function to fail.
Assembly and seal check
The final step is to assemble the device. Make sure all screws are swirled into their places. Pay special attention to the screws around the camera and in the corners of the body. An unwound screw can cause the body to backlash or dust to enter.
Use a new adhesive layer to fix the back cover. The old adhesive is better removed completely from the body and cover with alcohol or alcohol-containing liquid. Apply a thin layer of special adhesive (for example, B-7000) or use a ready-made adhesive frame (B-7000 is more convenient because it allows you to adjust the position).
After applying the glue, press the lid tightly and lock the smartphone with rubber bands for 15-20 minutes before the initial grip. Complete polymerization of the glue takes about 2-4 hours, during which time it is better not to use the phone actively.
- 🧹 Wipe the screen and case from glue and dust residues.
- 📱 Check the operation of all buttons and connectors.
- 📡 Make sure your smartphone sees the network and Wi-Fi (antennae may have been affected).
Testing the seals at home is conditional, but tight fitting the cover will protect against large dust. If the cover is not tightly attached, you may have forgotten some screw or put the plume incorrectly. The quality of the assembly directly affects the durability of the repair.
💡
High-quality cleaning of old glue and the use of a new adhesive base is a guarantee that the back cover will not peel off after a week of use.