How to carefully remove the back cover Xiaomi Redmi Note 9 Pro: instructions with photos and tips

Disassembling the Xiaomi Redmi Note 9 Pro is a challenge that owners face when replacing the battery, repairing plumes or cleaning dust. However, the wrong approach can lead to damage to the body, breaking flexible cables or even losing leakage. In this article, we will learn how to remove the back cover as safely as possible, what tools you need and what to look for to avoid typical errors.

The Redmi Note 9 Pro (codenamed joyeuse) has a glue-like lid design that makes it harder to disassemble than the screw mounts of older smartphones. It's not just about patience, it's about knowing the nuances, like where the latches are located or the right angle of grazing. If you've never taken a smartphone apart before, we recommend that you get to know the theory first, which will save you time and nerves.

⚠️ Note: Disassembly of the smartphone Xiaomi Redmi Note 9 Pro voids the warranty (if it is still valid), there is also a risk of damage to the display module or battery if you are not sure of your abilities, contact the service center.

Preparation for disassembly: tools and materials

Before you start removing the lid, make sure you have everything you need, and even one tool can cause permanent damage to the body or internal components, and here is a complete list of what you'll need:

• 🔧 Plastic mediators or shoulder blades (2-3 - for gently putting the lid on. Metal tools can not be used, they scratch the body.
• 🔥 Hair dryer or thermo-air station for softening the glue. Optimal temperature: 60-80°C.
• 🧲 Suction cups (1-2 pcs) - help to evenly lift the cover after heating.
• 📦 Container for screws – in the Redmi Note 9 Pro 12 screws of different types are used, they are easy to confuse.
• 🧴 Isopropyl alcohol (90%+) — cleansing.
• 🔋 Gloves and safety glasses – the battery in a smartphone can be bloated, which is dangerous.

If you do not have a thermal air station, a normal dryer will do, but watch the temperature: overheating is above 90.°C can damage OLED-Also, do not use sharp objects (knives, screwdrivers) for tweaking, it is almost guaranteed to lead to cracks in the glass panel.

⚠️ Warning: Before disassembling, completely drain the battery (up to 0%) and leave the smartphone off for 10-15 minutes.This minimizes the risk of short circuit in case of accidental battery damage.

Step-by-step: how to remove the cover without damage

Now, to the process itself, follow the instructions carefully, which will help to avoid errors, and let's start with heating the case, because the glue that holds the lid is only plastic at high temperatures.

Step 1. Heat the body.

Turn on the dryer at medium power and evenly warm the back cover for 2-3 minutes, paying special attention to the edges. Keep the hair dryer at a distance of 5-7 cm from the surface, so as not to overheat the plastic. Once heated, the cover should become warm to the touch, but not hot.

Step 2: Filting the lid

Put a suction cup on the bottom of your smartphone (near the USB-C connector) and pull up a little. Put a plastic mediator in the gap and gently swipe it along the edge, separating the lid from the body. Don't put too much effort -- if the lid doesn't lend itself, warm it up again.

Step 3. Disconnect the latch

Once the lid has been raised 1-2mm, use the mediator around the perimeter to release all the latches. In the Redmi Note 9 Pro, 14 of them are 5 on each long side and 2 on the top and bottom, and if you hear a characteristic click, then the latches are free.

Step 4: Complete removal of the lid

When all the latches are snapped, carefully remove the lid and put it aside. Don't pull the fingerprint scanner plume, it's glued to the lid and can come off. If the plume is in the way, unplug it from the motherboard with a plastic blade.

Heated body with a hair dryer (60-80 ° C |)

Only plastic tools are used |

Suction cup installed at the bottom of the smartphone |

Fingerprints are not stretched |

No screws lost (container used)-->

Common Mistakes and How to Avoid Them

Even experienced masters sometimes make mistakes when disassembling Xiaomi Redmi Note 9 Pro. Here are the most common of them and ways to prevent them:

• 🔥 Overheating of the case - causes plastic to deform or detach the glass panel. Solution: Use a thermometer to control temperature.
• 🔧 Using metal tools, it scratches the body and can puncture the battery. Solution: plastic picks or guitar picks.
• 📱 So, abruptly removing the lid -- it breaks the plumes or it damages the latches. Solution: move slowly, checking each latches.
• 🔋 Ignoring a bloated battery is a risk of fire. Solution: If the battery is bloated, don't disassemble the smartphone without protection.

Another common problem is damage to the sealing gum around the camera, which is responsible for dust and moisture protection (IP53 in the Redmi Note 9 Pro). If the gum is torn, the smartphone will lose its protection from moisture. When disassembling, try not to touch it with your tools.

⚠️ Warning: If you find that the battery is blown up after removing the lid (seen by bulge or deformation), immediately stop disassembling. The bloated battery may explode when mechanically impacted.

Comparison of Disassembly Methods: Which is Better?

There are several ways to remove the cover of the Xiaomi Redmi Note 9 Pro, but not all of them are equally safe.

As you can see from the table, the heat and plastic mediator method is the most reliable, and it's even for those who are taking a smartphone apart for the first time, and vacuum suction cups are often touted as "the easy solution," but in practice they rarely do well with the Redmi Note 9 Pro's adhesive mount.

What to do after the lid is removed?

When the lid is successfully removed, you will have access to the internal components of the smartphone.

• 🔋 Replacing the battery is the most popular reason to disassemble.The Redmi Note 9 Pro uses a Li-Po 5020 mAh battery.
• 📸 Cleaning the camera from dust – over time, dust accumulates under the glass of the module, degrades the quality of the photo.
• 🔌 Replacement of the connector USB-C — If the smartphone does not charge or recognize the cable.
• 📶 Checking antenna plumes – if the network or Wi-Fi goes missing, the problem may be in them.

If your goal is to replace the battery, remember that the new battery must be original or from a proven manufacturer (such as ZMI or Baseus). Cheap counterparts often have lower capacity and can swell in a few months.

⚠️ Warning: When assembling a smartphone, do not tighten the screws too much - this can lead to deformation of the motherboard. Use a screwdriver with a torque limiter (3-4 N · cm).

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Before assembling your smartphone, clean the contacts of the fingerprint scanner plume with isopropyl alcohol, which will improve the sensitivity of the sensor after disassembly.

How to reassemble the smartphone back?

Building Xiaomi Redmi Note 9 Pro after repair is no less important process than disassembly.

1. Checking the plumes

Make sure all flexible plumes (display, camera, fingerprint scanner) are properly connected to the connectors on the motherboard, and they should sit tightly, without skewing.

2. Applying new glue

If you completely remove the lid, the old glue has lost its properties. Use 3M double-sided tape or a special glue for smartphones (for example, the B-7000). Apply it with a thin layer around the perimeter, avoiding hitting speakers or microphones.

3. Leakproofness check

After assembly, turn on the smartphone and check:

• Is the fingerprint scanner working?
• Are there any extraneous sounds when shaking (this may indicate improperly installed components).
• The camera and microphones are working properly.

If something doesn't work, take your smartphone apart again and check the connections, and most often, problems arise from poorly connected plumes or clamped cables.

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When you build it, use the original screws, they're of different lengths, and a screw from the camera module screwed into the motherboard can damage it.

Frequent questions about the dismantling of Xiaomi Redmi Note 9 Pro