The Xiaomi Qin 2 is a popular button phone with a minimalist design, but even with these devices, the screen can crack, stop responding to presses or get scratched. Replacing the display on this device seems like a simple task, but has a number of hidden complications: from choosing a compatible part to the risk of damaging the plumes during disassembly. In this article, a step-by-step algorithm with photos of key stages, screen tips and unique techniques that service centers use to protect flexible contacts from cliffs.
It’s important to understand that the Qin 2 is a simple Xiaomi phone, but it’s not exactly a smartphone, and it doesn’t have a removable battery (like the old bell ringers), but it’s not a monolithic Redmi case, and we’ll look at three replacement methods: full disassembly, partial access (for power users), and emergency, when the phone doesn’t turn on, and you’ll learn how to check the new screen before it’s final built so you don’t have to repeat the procedure.
Preparation: tools and security
Before you start dismantling, make sure you have everything you need. For Xiaomi Qin 2, standard smartphone kits will not work – you need specialized tools:
- 🔧 Plastic blades (thickness 0.2–0.3 mm) – metal can scratch the board.
- 🔥 Building hair dryer (with a power of 1000-1500 W) for softening glue.
- 🧲 Magnetic mat or screw tray - in Qin 2 there are 12 pieces of different sizes.
- 🔍 Lupe with backlight - screen plumes are thinner than 1 mm, they are easy to damage.
- 📦 New screen with verified compatibility (more on this below).
Note that the Qin 2 uses 3M double-sided tape to fix the screen, not liquid glue. This makes it easier to replace, but requires care when you disconnect. If you've never disassembled your phones, practice on a non-working machine, or watch video disassembly specifically for this model, the design of the case is unique.
⚠️ Warning: Do not use a household hair dryer to heat the case! temperature should be 60-80°C, and home hair dryers often exceed 100°C, which warps plastic and board. Better buy an inexpensive temperature-adjusted building dryer.
Selection of a new screen: original vs. analogues
There are three types of screens for Xiaomi Qin 2:
| Screen type | Price (rupe) | Pluses | Cons | Where to buy |
|---|---|---|---|---|
| Original (OEM) | 2 500–3 500 | 100% compatibility, original colors, sensor without delay | Expensive, long-term delivery, often forged | Official service centers Xiaomi, AliExpress (verified sellers) |
| Quality analogue (A+) | 1 200–1 800 | Price 2 times lower, often indistinguishable from the original | It may be 10-15% dimmer, rarely problems with sensor calibration. | AliExpress, Beru, local parts stores |
| Budget analogue (A-) | 600–1 000 | Minimum price, quickly delivered | Distorted colors, sensor delays, short service life | Marketplace, Uncertified Sellers |
How do you tell the original from the fake?
- 🏷️ Packaging: Xiaomi’s original screens come in white boxes with hologram and serial number.
- 🔧 Trains: the original they are flexible, with gold contacts (for fakes - copper or silver-covered).
- 📱 On-site test: ask the seller to connect the screen to the test phone - the original is turned on without artifacts.
If you choose an analog, give preference to models labeled "For Xiaomi Qin 2" and check reviews about a particular seller. Budget screens often have a backlight problem - it can flicker or shine unevenly.
💡
Before buying a screen, take a picture of the back cover of your Qin 2 – some batches have indicated the model as “Qin 2 Pro” or “Qin F21”, but the parts are incompatible for them!
Step-by-step disassembly Xiaomi Qin 2
Now, to the most critical point, follow the instructions in strict order, and skipping the steps can damage the plumes or the board.
Turn off the phone and remove it. SIM-memory-card
Place your phone on a soft surface (a towel or rubber mat)
Heat the back cover around the perimeter with a hair dryer (30–40 seconds)
Prepare a tray for screws and a marker for their marking-->
Step 1 Remove the back cover
Use a plastic blade to gently fit the lid on the lower left corner (there's a small gap there). Don't force it, the lid is held on the latches. If it doesn't lend itself, heat it up again with a hairdryer. Don't use a knife or a screwdriver, it will leave traces on the plastic.
Step 2: Spinning the screws
In Qin 2, 12 screws: 8 under the cross screwdriver (PH00) and 4 under the five-point screwdriver (Pentalobe P2). Remember the location of each one - they are of different lengths! It is better to take a picture of the board before you twist the screws.
Location of screws:
4 short (PH00) - at the corners of the board
4 long (PH00) - in the centre
4 five-beam (P2) around the cameraStep 3: Disconnect the plumes
Carefully tuck the black plug of the screen plume (it's at the top of the board) and unplug it. There's also a button plume in the Qin 2, so you don't have to touch it unless you're planning on replacing the keyboard. Don't pull the wires -- just the connector!
What do I do if the plume is broken?
Step 4: Removing the old screen
The screen in Qin 2 is glued with double-sided tape. To remove it, heat the front of the phone with a hair dryer (not higher than 70°C) and gently tuck the screen with a plastic spatula on the left edge. If the tape does not move, use isopropyl alcohol - it dissolves the glue, but does not harm the plastic.
💡
Never use acetone or solvent 646 – they destroy the anti-reflective screen covering and can damage the board!
Installation of a new screen and assembly
Before installing a new screen, check its performance:
- Connect the new screen plume to the board.
- Then, make sure you keep it on the scotch (do not stick it all together!).
- Connect your phone to charging – if the screen catches fire and responds to taps, you can continue.
If the screen is not switched on:
- 🔌 Check if the plume is tightly inserted into the connector.
- 🔍 Check the contacts on the board - they may be contaminated or oxidized (wipe with alcohol).
- 📱 Try another screen - the problem may be the phone board.
To stick the screen, use a new 3M double-sided tape (0.2mm thick) applied only to the phone frame, not the screen itself, to prevent dust from entering the display. Press the screen evenly, starting from the center to avoid bubbles.
The assembly takes place in reverse order:
- Pay the fee (screws should come in effortlessly!).
- Connect the plumes and check the functionality of the buttons.
- Install the back cover starting at the top edge.
⚠️ Warning: After assembly, turn on the phone and check all the functions: sensor, backlight, speaker, microphone and buttons. If something doesn't work, disassemble the phone again - most likely you forgot to plug the plume or pressed the wire.
Common Mistakes and How to Avoid Them
Even experienced wizards sometimes make mistakes when replacing the screen with the Xiaomi Qin 2.
| Mistake. | Effects of consequences | How to avoid |
|---|---|---|
| Overheating of the fee by a hairdryer | Microchip detachment, phone not switched on | Use a hair dryer at minimum power, keep at a distance of 10 cm |
| Use of metal tools | Scratches on board, short circuit | Work only with plastic or wooden blades |
| Incorrect screw installation | Damage to board, cracks in body | Mark screws during disassembly, use a magnetic screwdriver |
| Dust hitting the screen | Visible particles, uneven illumination | Work in a clean room, use a vacuum cleaner at minimum power |
Another common problem is that the sensor is broken after replacement, and 90 percent of the time, it's because of:
- 🔌 Bad contact plume - check if it is fully inserted into the connector.
- 🧹 Contamination of contacts - wipe them with alcohol and a soft brush.
- 📱 Incompatible screen – some cheap analogues require firmware sensor driver.
If the sensor is working but with delays, try calibrating it through the engineering menu:
Enter the dialer: ##3644633##
Select Sensor Test → Touch Screen
Follow the instructions on the screenAlternative replacement methods
If you don’t have the experience or tools, consider alternative ways to:
1. Replacement at the service centre
The cost of replacing the screen in official Xiaomi services is 1,500-2,500 rubles (excluding spare parts).
- ✅ Work guarantee (usually 3-6 months).
- ✅ Use original spare parts.
- ✅ Checking your phone for other malfunctions.
Cons: Long (2-5 days) and expensive, considering the price of the screen.
2. Postal replacement
Some services (e.g. Xiaomi Repair or FixPrice) offer a postal repair service: you send your phone by courier, and they return it with a new screen, starting at 1,800 rubles (including delivery), suitable if you are not in the big city.
3. Exchange under the Xiaomi Trade-In program
If the phone is badly damaged, you can exchange it for a new Qin 2 or another model with a surcharge. Xiaomi's official website has a section called "Trade-In" where you evaluate the condition of the device, for example, for a Qin 2 with a broken screen, you give a discount of up to 1,500 rubles for the purchase of a new phone.
What if the screen doesn’t work after replacement?
If you have assembled your phone but the screen is black or unresponsive, follow these steps:
- Check the connection of the plume - disassemble the phone and make sure that the connector is tightly fixed.
- Connect charging – sometimes the phone does not turn on due to a discharged battery (even if the charge was before disassembly).
- Check the battery, if you turned it off, the safety controller might have gone off. Try holding the power button for 20 to 30 seconds.
- Test with another screen – if possible, connect a knowingly working display to rule out a problem with the board.
If the screen is turned on but the image is distorted (strips, artifacts), this may indicate:
- 🔌 Damage to the plume - inspect it for tears.
- 📱 The problem with the graphics chip - requires soldering or replacement of the fee.
- 🔥 Overheating of the board – if you warmed with a hair dryer for too long, the chips could damage.
In the most difficult cases (for example, if the phone does not turn on at all), only diagnostics in the service center using a post-tester or programmer will help.
💡
If after changing the screen, the phone stopped charging, check the flexible charging plume - it is located next to the screen plume and could move away during disassembly.