Replacement of the back cover on Xiaomi Redmi Note 8 Pro: a complete guide with nuances

The back cover of the Xiaomi Redmi Note 8 Pro is one of the most vulnerable parts of the smartphone: it cracks when falling, scratches from the keys in your pocket and loses its presentable appearance over time. If you encounter this problem, do not rush to carry the phone to the service center. With the right approach, you can replace the cover yourself, saving up to 70% of the cost of repair. However, the process requires accuracy: fragile plumes are hidden inside the case, and improper handling of the adhesive layer can damage the sealing.

In this article, we will take a step-by-step photo instruction, provide tools and materials, and warn against common errors. We will focus on undamaged disassembly, quality replacement (original vs. replica) and post-build functionality check. If you have never disassembled a smartphone, don’t worry: the Redmi Note 8 Pro is a medium-sized model, and if you follow our recommendations, you can do it in 30 to 60 minutes.

Training: tools and materials

Before you start, make sure you have everything you need, and not even one tool can damage the body or the internal components.

• 🔧 A set of plastic blades (preferably with curved ends for putting the lid on) Metal mediators will not work, they will scratch the body.
• 🔥 A hair dryer or a thermo-air station (at least 500 W) for softening the adhesive. Alternatively, iOpener (a special bag with a heating element).
• 🧲 Suction cup for screens (diameter 4-6 cm) - will help to evenly lift the cover after heating.
• 🔩 The screwdriver. PH00 (for the middle frame attachment screws. PH0 It's too big, it's too big.
• 🧴 Isopropyl alcohol (90%+) or a specialized cleaner to remove glue residues.
• 📦 New back cover (original or quality replica) Note the lack of a hole for the NFC-cheap-fake antennas.
• 🎨 Double-sided tape or glue B-7000 (if there is no lid on the lid).

Also prepare your workspace: a table with good lighting, an antistatic mat (or at least a piece of paper), and a screw container (so you don't lose them). If you use a hair dryer, keep it 10-15 cm away from the case so you don't overheat the battery.

Selection of the back cover: original vs. replica

The quality of the lid that you replace depends not only on the look but also on the functionality of the smartphone. Cheap replicas often have problems with:

• 📶 Signal reception (due to the absence of a metallized layer under the antennas).
• 🔋 Wireless charging (if the model supports it).
• 🔒 Work. NFC (The fake antenna may be missing or it may be displaced).

In the table below, compare the options for the covers for the Redmi Note 8 Pro:

Where to buy? Look for original lids on AliExpress from trusted sellers (rated 98%+) marked "Original Xiaomi" or in service centers. For replicas, pay attention to the reviews from the photo - they often show the quality of the edge processing and the matching of holes.

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Before buying a lid, take a picture of yours from all sides and compare it to the seller's image. Pay special attention to the location of the microphone holes, speaker and cameras - they should match up to a millimeter.

Step-by-step disassembly of the phone

Start with power out: Turn off the phone and remove it. SIM-The map from the tray. Follow the instructions:

1. Heat the lid. Turn on the dryer at a medium power (~80°C) and warm the back of the phone evenly for 2-3 minutes, paying special attention to the edges. The glue should become soft, but not melted.
2. Scapula squashing. Insert the plastic shoulder blade into the gap between the lid and the frame (start at the lower right corner where the tray notch is located). SIM-Carefully drive the shoulder blade along the edge, without going deeper than 1-2 mm.
3. Use a suction cup. Once the lid is slightly raised, attach the suction cup closer to the top edge and pull up. If the lid doesn't lend itself, reheat the problem area.
4. When the lid is removed, you'll see three plumes from the fingerprint scanner, NFC-Take care to disconnect them with a shoulder blade, pulling them by the black latches (don't pull the wires!).

Now you can take the lid off completely. Pay attention to the glue residues -- they need to be removed with alcohol or a special cleaner. If you plan to use the old lid as a template, don't clean it completely: leave some of the glue to try on the new one.

Installation of a new cover and assembly

Before installing a new cover, check:

• 🔍 Hole for buttons (on, volume) – they must match the original.
• 📏 Placement of antenna lines (thin metal strips under the cover).
• 🖼️ Xiaomi logo – on replicas it can be displaced or made in a different color.

Installation process:

1. Apply a thin layer of B-7000 glue around the perimeter of the new cover (unless the kit contains adhesive tape). Avoid getting glue on the speaker and microphone holes.
2. Carefully connect the plumes in reverse order: first NFC-The antenna, then the fingerprint scanner and the microphone, make sure the latches are fixed with a characteristic click.
3. Line the lid over the camera hole and gently press it, starting at the top.Use a soft roller or fingers to squeeze out air bubbles.
4. Secure the lid with screws (if your model has an additional mid-frame mount). Don't pull them over - easy enough effort.

After assembly, leave the phone under the press for 1-2 hours (for example, between two books) so that the glue is evenly grasped.

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The most common build error is the wrong connection of the fingerprint scanner plume, so if the sensor doesn't work after the cover is replaced, check if the contacts are bent and the connector is tight.

Checking functionality after replacement

Before closing the case, perform a test of all systems:

• 📞 Calls and mobile network: check the signal level (should be no lower than before the replacement).
• 🔊 Speakers and microphone: Call another phone and make sure the sound is clear, without wheezing.
• 🔋 Wireless charging (if supported): Put your phone on the charging station and check the indication.
• 🔒 NFC Fingerprint scanner: add a new print and try to pay contactlessly.
• 📷 Camera: take a test photo with a flash - check if the glue hit the lens.

If something's not working:

• 🔧 Fingerprint scanner: reconnect the plume or check if the contact area on the board is damaged.
• 📡 NFC/Network signal: Make sure the antenna lines on the lid match the original. In cheap replicas, they can be offset.
• 🔊 Microphone/Speaker: Check if the holes are covered with glue or dust.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when replacing the lid, and here are the most common ways to prevent them:

⚠️ Warning: Never use metal tools to lid the lid, they can scratch the body or, worse, puncture the battery, the consequences are fire or battery bloating.

• 🔥 Overheating the battery with a hairdryer. Keep the hairdryer at a distance of 10-15 cm and do not direct the air flow to one area longer than 10 seconds. The optimal temperature is 70-80°C.
• 🧩 Train damage. Always disconnect them by the black latches, not by the wires. If the plume breaks, you can temporarily lock it with tape, but you better replace it with tape.
• 💧 Get the glue on the contacts. Before applying the glue, paste the plume connectors with paint tape. If you already have the glue, remove it with alcohol and toothpick.
• 📏 If the lid is crooked, it will cause gaps and dust. Use the original as a template before you finally fix it.

Another common problem is the creaking of the new lid.

• Insufficient amount of glue (add point-by-point at the edges).
• Getting debris between the lid and the frame (disassemble and clean the surface).
• Low quality of the material of the cover (plastic rubs against a metal frame).

Alternatives: When a replacement is not needed

Not always cracks or scratches on the lid require a complete replacement, but consider these options if the damage is uncritical:

• 🎨 Sticking the protective film, if you scratch it, you can use matte or glossy vinyl film (for example, from Dbrand or Slickwraps) to hide the defects and protect against new ones.
• 🔧 Liquid glass crack repair. For chips up to 2 cm, you can use LOCA-glue, B-7000) It's a neat, but cheaper than replacing it.
• 🛡️ Use of depreciation cover. Covers with TPU-Inserts (for example, Spigen Tough Armor) protect the lid from further damage and visually mask defects.

If the crack is deep but not through, you can fill it with a dye-colored epoxy resin, which is suitable for the Redmi Note 8 Pro with a black or dark blue lid. For lighter models, it's best not to experiment, because the resin can turn yellow over time.

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Liquid glass or film will not restore the tightness of the phone. If after a fall under the lid accumulated moisture (seen by the condensate under the camera), disassembly and drying are required!

FAQ: Answers to Frequent Questions