Xiaomi Redmi Note 3 Pro is a legendary smartphone that still remains in service with many users. However, over the years, the battery begins to “set”, the speaker wheezes, and the camera stops focusing. Most repairs require removing the back cover, but it is not so easy: the manufacturer used glue and latches, and the wrong actions can damage the plumes or body.
This article will help you understand how to safely dismantle the Redmi Note 3 Pro cover, what tools you will need, and what to look for to avoid turning the repair into an expensive error.We will also look at the typical problems faced by users and give recommendations for choosing spare parts.
Why you might need to remove the cover
The back of the Xiaomi Redmi Note 3 Pro is not just a decorative element, but a part of the structure that protects the internal components.
- 🔋 Battery replacement is the most common reason. After 3-4 years of operation, the battery capacity drops by 30-50%, and the smartphone begins to turn off at 20-30% of the charge.
- 📸 Camera Repair: Replacing the module, cleaning the lenses or plume if the image becomes blurred or artifacts appear.
- 🔊 Problems with the speaker or microphone: wheezing, lack of sound, poor hearing of the interlocutor.
- 📶 Replacement of the antenna module (if the network signal is missing or Wi-Fi is unstable).
- 🧲 Cleaning from dust – the accumulation of debris under the lid can lead to overheating.
It's important to understand that the Redmi Note 3 Pro is not designed to be easy to disassemble, and unlike today's modular smartphones, the lid is glued around the perimeter, and there are fragile plumes inside, and service centers report that 40 percent of self-disassembly results in damage to a flexible fingerprint cable or a main board.
Preparation: security tools and measures
Before you start disassembling, make sure you have everything you need, and the lack of the right tools is the main cause of breakdown.
| Tool. | Appointment | Where to buy |
|---|---|---|
| Plastic spatula (mediator) | For careful putting of the cover without scratches | AliExpress, Radio Goods Stores |
| Suction (diameter 4-5 cm) | Helps to separate the cover from the body after heating | Smartphone repair kits |
| Fryer-dryer | Softening of glue (temperature 60–80 °C) | Household stores, AliExpress |
| Thin screwdriver (T3, T4) | For unscrewing screws under the lid | Tool shops |
| Isopropyl alcohol (90%+) | Cleaning of glue residues and contacts | Pharmacies, radio shops |
Also prepare the workplace:
- 📱 Turn off your smartphone and remove it. SIM-memory-card.
- 🔌 Discharge the battery to 30-50% – this will reduce the risk of fire when heated.
- 📸 Take a picture of the process – it will help to properly assemble the smartphone back.
- 🧤 Wear an antistatic bracelet (or at least touch a grounded object) to avoid static discharge.
⚠️ Warning: Do not use metal blades or knives - they will scratch the body and can damage the plumes.°C: This is dangerous for the battery and screen.
Step-by-step instructions: how to remove the cover
The process of disassembling the Redmi Note 3 Pro requires patience. Follow the instructions carefully, take your time.
- Heat the body. Turn the dryer on to the minimum power and evenly warm the back cover for 2-3 minutes, keeping it at a distance of 5-7 cm. The glue should become soft, but not melt. The temperature is not higher than 70-80 ° C.
- Separate the lid. Stick the suction cup closer to the bottom edge (where the charging connector is) and pull up. Simultaneously, pull the lid with a plastic blade as you move around the perimeter. Start at the bottom corner, there are fewer plumes.
- Careful grazing of the latches. The lid is not only held on the glue, but also on the plastic latches. Make an effort, but don't overdo it -- if the lid doesn't respond, warm it up again.
- Disconnect the fingerprint scanner plume. Once the cover is lifted, you'll see a thin plume going from the home button to the motherboard. Carefully unplug it (usually it's on the latch).
Heated body with a hair dryer (60-80 ° C |)
It uses a plastic blade, not a metal blade.|
Suction cup glued to the bottom edge |
Fingerprint plume disconnected until full lid is removed-->
If the lid doesn't lend itself, don't try to pull it off by force, because you risk breaking the plume or breaking the latches, and you'd better warm up the problem area again.
⚠️ Note: Some versions of the Redmi Note 3 Pro (especially Chinese ones) have a fingerprint scanner plume soldered to the board, in which case it cannot be detached, you have to remove the cover along with the button, which increases the risk of damage.
What to do if the cover is broken when removed?
Common Mistakes and How to Avoid Them
Even experienced users sometimes make mistakes when disassembling the Redmi Note 3 Pro.
- 🔥 If you use a dryer at maximum power, you can melt the plastic or damage the battery. Optimum temperature is 60-80.°C.
- 🔌 Trying to remove the lid without unplugging the print plume, causes the contacts to break, and the scanner stops working.
- 🛠️ Using the wrong tools. Metal blades scratch the body, and too thick mediators break the latches.
- 📱 Disassembly with your smartphone on. This can cause a short circuit if you accidentally touch the board.
- 🧴 Using superglue to reassemble, it can damage the plastic and make the next disassembly impossible. 3M 9448A.
Another common problem is that the antenna contacts are damaged, and they're located on the sides of the body and they connect to the lid through spring-loaded whiskers, and if you bend them, the network signal or Wi-Fi signal will deteriorate.
1. whether the battery is connected (sometimes it shifts during assembly).
2. is not damaged the plume of the display (if the screen is not glowing, but there is vibration).
3. Is the power plume properly connected to the motherboard.-->
What to do after removing the cover
When the lid is finally removed, you'll see the inside of the smartphone, and here's what you can do next:
- 🔋 Battery replacement. The battery in the Redmi Note 3 Pro is glued to the body. To remove it, apply a plastic spatula and carefully pull the tongue (if any: BM43) or a quality analogue (e.g. from Patona).
- 📸 Clean or replace the camera. The module is mounted on two screws. Unscrew them and unplug the plume. To clean the lenses, use a lilaless napkin and isopropyl alcohol.
- 🔊 Speaker repair. The speaker is at the bottom and is also glued. Most often, the problem is that the contacts oxidize, so you can clean them with alcohol.
- 🧹 Dust removal. Use a soft brush or a spray of compressed air. Don't blow with your mouth. Moisture from your breath can settle on the board.
If you are planning to replace the cover, consider that the original parts for the Redmi Note 3 Pro are no longer manufactured.
- The lids are used for damage and wear.
- Remarks from third-party manufacturers (quality varies, often the color does not match).
- Universal silicone cases, if the purpose is only protection (but they will not replace the original cover).
Assembly of a smartphone: tips and nuances
Putting the Redmi Note 3 Pro back together is often harder than disassembling.
- Check all the plumes. Make sure the fingerprint scanner, display and battery plume are tightly connected. If the contacts are oxidized, clean them with alcohol.
- Stick the lid. The original glue won't hold it as tightly. Use 3M 9448A double-sided tape (0.2 mm thick) or special smartphone glue (e.g. B-7000) and apply it with a thin layer around the perimeter, avoiding the plume area.
- Check the latches. Make sure all the plastic latches are in place. If any of them break, the lid will hang.
- Testing. After assembly, turn on your smartphone and check: Is the fingerprint scanner working, is there sound in the speaker and microphone, is it catching the network and Wi-Fi, is the battery charging?
⚠️ Warning: If you overheat after assembly, you probably forgot to plug the heat paste onto the processor. In the Redmi Note 3 Pro, it's applied to a Qualcomm Snapdragon 650 chip and closed with a copper plate. Without it, the phone will brake and shut down.
💡
The key is not to pull the screws. In the Redmi Note 3 Pro, they're small and easily torn off. Tighten them cross-to-cross like the wheels of a car to avoid distortion.
Where to buy spare parts and how much it costs
Parts prices for the Redmi Note 3 Pro vary depending on the quality and the seller. Here are the approximate rates (for 2026):
| Parts. | Original (b/u) | A quality replica | Where to buy |
|---|---|---|---|
| Back cover. | 800–1 500 ₽ | 500–1 000 ₽ | AliExpress, Avito, "Svyaznoy" (disassembly) |
| Battery (4050 mAh) | 1 200–1 800 ₽ | 600–1 200 ₽ | AliExpress, “Take”, local services |
| Main camera (16 MP) | 1 500–2 500 ₽ | 800–1 500 ₽ | AliExpress, eBay |
| Speaker + microphone | 400–800 ₽ | 200–500 ₽ | AliExpress, Radio Goods Stores |
| The fingerprint scanner plume | 600–1 200 ₽ | 300–800 ₽ | Specialty stores (e.g. GSMMaster) |
When buying, pay attention to:
- 📦 On AliExpress, choose stores with a rating of at least 98% and orders from 100+.
- 📋 Compatibility: Find out if the part is right for the Redmi Note 3 Pro (not for the Redmi Note 3 without the Pro).
- 🔄 Some sellers give 3-6 months warranty on replicas.
If you're not sure about your abilities, you should contact the service. The average cost of disassembling and replacing a battery in a workshop is 1,500-2,500. ₽ (depending on the region).