Replacement of the display on Xiaomi Redmi Note 7: a detailed guide with photos and nuances

Xiaomi Redmi Note 7 remains one of the most popular smartphones in the budget segment even 5 years after its release. AMOLED-The service center asks for a replacement screen from 5 000 to 12 000 rubles, while the module itself costs 2-3 times cheaper. In this guide, we will understand how to replace the display on the Redmi Note 7 with your own hands, avoiding the typical mistakes of beginners - from selecting a spare part to soldering plumes and calibrating the sensor.

It's important to understand that the procedure requires precision and basic electronics skills, if you've never taken your smartphones apart, practice on an old device or watch video instructions before you start, we'll detail each step, including the hidden pitfalls that are not mentioned in most guides, such as why a new screen might not work after installation (spoiler: it's about the sensor firmware), or how to avoid damaging the flexible plume when disassembling.

This article is relevant for all modifications of Redmi Note 7:

• 📱 Redmi Note 7 (codename lavender)
• 📱 Redmi Note 7 Pro (codenamed Violeta)
• 📱 Redmi Note 7S (Indian)

The difference between the models is only in the processor and the camera, the design of the display module is identical.

1. Diagnostics of malfunction: is the display really to blame?

Before you order a new screen, make sure that the problem is in it.Symptoms of the Redmi Note 7 display breakdown:

• 🔍 Cracks or broken pixels are an obvious sign of mechanical damage.
• 🖥️ Black screen with working backlight (visible image at an angle).
• 👆 The sensor is not working (partially or completely), but the image is displayed.
• 🌈 Artifacts: stripes, flickering, distorted colors.

However, the same symptoms may indicate other malfunctions:

⚠️ Warning: If the smartphone doesn't turn on at all (no vibration, no warming), the problem may be in the battery or motherboard!

The Redmi Note 7 test menu allows you to check the performance of the display and sensor without disassembly.

1. Open the Phone app.
2. Enter the code: ##4636###.
3. Choose the Sensor Test → Touch Screen.
4. Swipe your finger across the screen – if the lines don’t repeat your movements, the sensor is faulty.

2. Selection of display module: original vs. copy

Part quality is responsible for 80% of repair success. 3 screen types are available for the Redmi Note 7:

• 🔹 Original (OEM) — Pros: 100% compatibility, no calibration issues Cons: price (from 4,000) ₽), hard to find.
• 🔹 Copy of Premium (A)+) — High-quality replicas with factory assembly. Pros: price 2,500-3,500 ₽, Cons: small artifacts in bright light are possible.
• 🔹 Budget copy (A-/B) — cheap modules with simplified assembly. 1 500 ₽. Cons: dim backlight, poor sensor sensitivity, possible "dead" pixels.

Key parameters in the selection:

Critical: For the Redmi Note 7 Only modules with connector are suitable 30-pin and marking DM-T70 or DM-T70H (For the high-brightness version. Screens from Redmi Note 8/9 physically not suitable due to the different location of the holes for the speaker and sensors!

Where to buy:

• 🛒 AliExpress is cheaper but long to wait.Look for sellers rated 98%+ and Russian reviews.
• 🛒 Local stores (for example, FixPriceService, Mobile-Repair) – faster, but more expensive by 20-30%.
• 🛒 Avito/Yula – the risk of running into a used screen with hidden defects.

⚠️ Warning: In 2023-2026, the number of “original” screens sold has increased, which are actually re-labeled copies!

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Before you buy, ask the seller to take a video of the screen test on your work smartphone. Pay attention to the uniformity of the backlight (whether there are dark spots) and the sensitivity of the sensor in the corners.

3. Necessary tools: what can not be replaced by “improvised means”

Replacing the Redmi Note 7 display requires a specialized tool, which often causes damage to the plumes or body.

• 🔧 Screwdriver kit: Phillips PH00 — hull-rotor; Y00 — motherboard; T3/T4 — battery-connector.
• 🔥 Dryer or thermo-air station (power of at least 800 W) - for softening the glue.
• 📏 Plastic blades (thickness 0.1–0.2 mm) – for screen separation.
• 🧲 Suction cups (diameter 5-7 cm) - for lifting the display module.
• 🔌 Tweezers (anti-magnetic) – for working with plumes.
• 🔋 Capton or Isolation for Isolating Contacts.
• 🧴 Clay. B-7000 or T-7000 — fixate.

What NOT to use:

• ❌ Knife or metal blades – scratch the frame and damage the plumes.
• ❌ Household hair dryer - insufficient temperature (80-100 is necessary)°C).
• ❌ Superglue or “Moment” – will destroy the display during the next repair.
• ❌ Magnetic screwdrivers – can magnetize the sensors of the smartphone.

The cost of a full set of tools is about 1,500–2,000 ₽. If you plan to repair your smartphone regularly, the investment will pay off after 2-3 replacements.

Check for all screwdrivers (PH00, Y00, T3/T4)|Put the screws on the containers (not to confuse)|Connect the dryer to the network and check the temperature|Prepare the workplace (clean surface, good lighting)|Take it off. SIM-card and memory card from a smartphone-->

4. Step-by-step disassembly of Xiaomi Redmi Note 7

The process of replacing the display takes 1.5-2 hours at the first experience. Follow the instructions strictly in order to avoid missing important details.

Step 1: Shutting off power and removing the back cover

1. Turn off your smartphone and remove the tray for SIM-map.
2. Heat the back cover around the perimeter with a hair dryer (temperature 80-90)°C, time 2-3 minutes).
3. Insert a plastic blade into the gap between the lid and the body (start at the lower corner where the charging connectors are located).
4. Carefully drive the shoulder blade around the perimeter, separating the lid. Suction cups here will not help - the cover of the Redmi Note 7 is attached to the latches, not to the glue.

Step 2: Shutting off the battery

⚠️ This is the most dangerous stage! Short circuit when working with a connected battery can disable the motherboard.

1. Unscrew 4 screws. PH00, metal-plate.
2. Disconnect the battery connector with tweezers (do not pull the wires!).
3. Close the connector with tape so that you do not accidentally close the contacts.

Step 3: Disconnect the display module

1. Unscrew 6 screws. Y00 motherboard.
2. Disconnect the connectors: Display plume (30-pin, located at the top of the board; sensor plume (FPC, near the display connector; the plume of the front camera and sensors (a small connector in the center).

Heat the display edge with a hairdryer (temperature 90–100)°C, time 3-4 minutes).

Subdue the screen with a plastic spatula, starting at the lower right corner (where the sensors are located).

Attention to details:

• 🔹 Don’t pull the screen by force – under it pass plumes speaker and antennas!
• 🔹 If the glue doesn't lend itself, warm it up again. Don't use metal tools.
• 🔹 On the back of the display can remain bilateral Scotch – remove it with alcohol.

5. Installation of a new display and assembly

Before installing a new screen, check its performance by temporarily connecting it to the board (without glue fixing), which will avoid problems after the final assembly.

Step 1: Preparation of a new module

• Remove the protective film from the inside of the screen (if any).
• Check the presence of sealing gum around the perimeter - it protects against dust.
• If necessary, transfer from the old screen: speaker and microphone (stick on double-sided tape); LED notifications (if not included); Metal frame (some copies it is not).

Step 2: Connecting the plumes

1. Carefully insert the display plume into the connector on the motherboard. It should snap with a slight click.
2. Connect the sensor plume and the front camera.
3. Temporarily assemble your smartphone (without glue) and turn it on to check: Is the image displayed; Is the sensor working (check in Sensor Test); Is the backlight and LED notifications on?

Typical problems after replacement:

Step 3: Screen fixation

1. Apply a thin layer of glue B-7000 around the perimeter of the body (do not overdo it - excess can get on the plumes!).
2. Set the display starting at the top (where the sensors are located) and press it.
3. Write all screws in reverse order. Attention: The screws around the camera and the charging connector are of different lengths!
4. Stick the back cover to a double-sided scotch (for example, 3M 9448A).

The reason is that the touch firmware doesn't match the version expected by the system. Redmi Note 7 uses a Synaptics controller. S3706 FocalTech, which requires calibration.

Method 1: Automatic calibration

1. Go to Settings → About Phone → MIUI version.
2. Click 7 times on the MIUI version to activate Developer Mode.
3. Back to Settings → Additionally. → For developers.
4. Activate the Sensor Calibration option and follow the instructions on the screen.

Method 2: Fastboot Firmware (for advanced)

If the automatic calibration didn't work, you'd need to flash the sensor manually.

1. Download the sensor firmware for your model (check the controller version in the Sensor Test).
2. Install the Mi Flash Tool and Qualcomm drivers.
3. Transfer the smartphone to Fastboot mode (clip the power supply) + Turning down the volume).
4. Connect to the PC and execute the command: fastboot flash touch touch_fw.img fastboot reboot

⚠️ Attention: Incorrect sensor firmware can lead to complete inoperability of the touchscreen! If you are not sure about your skills, contact the service.

7. Testing and calibration of the new display

After the display is replaced, you need to check all the features of the Redmi Note 7 to make sure there are no defects.

Image check (no broken pixels, stripes, flickering)|Sensor test in #4636## (all zones react)|Checking the backlight (evenness, no dark spots)|Test speaker and microphone (call, voice recording)|Checking sensors (lighting, approximation)|Camera test (no artifacts from screen backlighting)|Check charging (cable is inserted tightly, there is no backlash)-->

Color calibration (if the screen is yellow or faded):

1. Go to Settings → Screen → Color mode.
2. Choose Standard (for natural colors) or Saturated (for bright colors).
3. If the colors are still incorrect, install the Screen Balance app from Google Play and adjust the balance. RGB manually.

To check the sensitivity of the sensor, use the Touch Screen Test application.

• 📊 Delayed response: less than 100 ms;
• 📊 Accuracy: deviation not more than 2-3 mm;
• 📊 Multi-touch: support for 10 simultaneous touches.

8. Frequent mistakes and how to avoid them

Even experienced craftsmen sometimes make mistakes when replacing the Redmi Note 7 display, and here are the most common ones and ways to prevent them:

Advice from the masters:

• 💡 If the screen flickers after replacement, check the reliability of connecting the backlight plume (it often departs when assembled).
• 💡 Use isopropyl alcohol (not acetone) to remove glue residues!).
• 💡 If the new screen is too dim, check the brightness settings in Settings → Screen. → Autobrightness.

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The most common reason for a broken screen after replacement is poor contact in the plume connector. Always check if it snaps to the characteristic click!

FAQ: Answers to Frequent Questions