Xiaomi phone bent - how to straighten the case, screen or board yourself?

If your Xiaomi smartphone suddenly deformed — bent the case, bent the screen or bent the motherboard — do not panic. In 80% of cases, the problem can be fixed without going to the service center. The causes of curvature vary from banal overheating when charging to mechanical stress (for example, if you sit on the phone in your back pocket).

In this article, we will discuss 5 working methods of straightening (including methods for screens). AMOLED and IPS, We'll tell you what tools you need, and we'll warn you against dangerous errors, and we'll also tell you why the Redmi Note series and the other two are the most popular. POCO They're more likely to suffer from deformities because of the design of their bodies. FAQ typographically.

Why Xiaomi smartphones are bending: 3 main reasons

Xiaomi's body or internal components rarely deform spontaneously, usually preceded by specific events, and the most common scenarios are:

• 🔥 Overheating – especially relevant for models with Snapdragon processors 8xx (For example, Xiaomi 12 Pro or Black Shark 5. With a long load (games, video rendering), the temperature can exceed 60°C, which leads to softening of the glue under the screen and deformation of the metal frame.
• 💥 Mechanical impacts – falling on a hard surface, pocket pressure (for example, if you sit on the phone) or unsuccessful repairs (when you put too much pressure on the body during disassembly), models with thin frames, such as the Mi 11 Ultra, are more often affected.
• 🔋 Battery bloating -- if the battery starts to puff up, it presses on the screen and the board from the inside, and it's not only dangerous for warping, it's also dangerous for fire.

Interestingly, Xiaomi’s glass-backed smartphones (such as the Mi 10 or Redmi K40) flex less frequently than the plastic-body models (Redmi 9A), but crack when impacted. Aluminum bezels (like the POCO F3) can bend, but usually return to their original state after cooling.

⚠️ Attention: If the deformation is accompanied by extraneous sounds (squeaking, crackling) when pressing the case or spots on the screen (leakage of liquid crystals), self-repair can aggravate the problem.

How do you know which part of the phone has been bent?

Before you start straightening, you need to diagnose the problem accurately. Take your smartphone and do a few checks:

1. Visual inspection: Place your phone on a flat surface (like a desk) with the screen up. If it swings or there is a gap between the case and the table, there is a warp. Use a ruler or credit card to be precise, swipe it around the edge of the case to find bulges.
2. Screen check: Turn on a white image on your phone (you can open an empty document in Google Docs). If the screen distorts colors around the edges or you see "waves" - the problem is in the matrix or backlight.
3. Button test: Press the volume and power buttons, and if they go off or stick out, the metal frame is deformed.

For more accurate diagnosis, you can use the AIDA64 app (available on Google Play). Run a sensor test (Sensors → Temperature) – if some areas of the body are heated more than others, this may indicate internal pressure (for example, from a bloated battery).

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If you have a Xiaomi model with a removable back cover (like the Redmi 4X), take it off carefully and examine the battery. If it swells, don't use the phone until you have replaced the battery!

Method 1: straightening the housing with heating (for aluminum frames)

This method is suitable for smartphones with a metal frame (for example, POCO X3 Pro, Redmi Note 10 Pro).The idea is to soften the metal with heating and return it to its original shape under pressure.

• 🔥 Hair dryer (construction or household with temperature control)
• 📏 Flat surface (glass or ceramic tiles)
• 🧊 Heavy book or weight (weighing 1-2 kg)
• 🧤 Heat-resistant gloves (optional)

Step-by-step:

1. Turn off the phone and remove it. SIM-memory-card.
2. Place it on a flat surface with a screen down (if the back bends) or a screen up (if the front panel is deformed).
3. Heat the dryer site deformation from a distance of 10-15 cm for 2-3 minutes. The temperature should be 60-80 ° C (if the dryer does not have a thermometer, focus on the sensations - the body should be hot, but not burning).
4. Keep the phone cool, put a heavy book or weight on it. Leave it for 10-15 minutes.
5. If the deformity remains, repeat the procedure (but not more than 3 times!).

⚠️ Warning: Do not heat the screen for longer than 3 minutes - this can damage the matrix or detach the touch layer. For models with a glass back panel (for example, Xiaomi Mi 11), the method is not suitable - the glass can crack!

Remove the cover and film |

Get out. SIM-memory-card|

Check the temperature of the hair dryer (not higher than 80 ° C) |

Prepare a heavy subject for the press|-->

Method 2: Aligning the screen with the vacuum method

If your Xiaomi has a curved screen (for example, after a replacement or fall), but the matrix is intact, you can try the vacuum method. It works by creating a discharged environment that pulls the screen back in, you need a food vacuum cleaner (or a powerful vacuum cleaner with reverse traction) and a sealed package.

Instructions:

1. Place the phone in a zip package so that the curved part of the screen is facing upwards.
2. Put the vacuum tube into the bag and turn it on. Hold it for 1-2 minutes until the packet compresses around the phone.
3. Take the device out carefully and check the results, repeat the procedure if necessary.

This method is particularly effective for AMOLED-screens (for example, in Xiaomi 12 or Redmi) K50), because they're thinner and more flexible. IPS-However, if the screen is cracked or detached from the sensor, the vacuum can exacerbate the problem.

Method 3: Removing deformation from a bloated battery

If Xiaomi's body is arched in the center and the phone is quickly discharged or warmed, it's the bloated battery that's a dangerous situation, the battery can leak or ignite, and the only solution is to replace it.

How to replace the battery yourself:

• 🔧 Buy the original battery for your model (for example, Redmi Note 9 Pro is suitable for you). BM4B 5020 mAh capacity).
• 🔨 Disassemble your phone using plastic spatula and screwdriver (most Xiaomi needs a crossover). PH00).
• ⚡ Turn off the battery plume first to avoid short circuit.
• 🧴 Carefully tuck in the old battery (it is glued) and remove the remains of glue with alcohol.
• 🔄 Install a new battery, plug in the plume and assemble the phone.

After the battery is replaced, the case should return to its original state within 1-2 days. If the deformation remains, check if something is pressing on the board (for example, an improperly installed plume).

⚠️ Warning: Never puncture a bloated battery! This can cause fire or chemical burn. If the battery is too swelled (more than 8 mm thick), don't take the risk - take the phone to the service.

Method 4: Fixing the flexible board (for “banned” smartphones)

Sometimes Xiaomi bends not because of the body, but because of the warping of the motherboard, which is typical for models with flexible boards (for example, Xiaomi Mix Fold or some POCO). Symptoms: the phone "banana" arches along, buttons are intermittent, network signal or Wi-Fi may disappear.

How to fix it:

1. Take the phone apart and get the board out. Be careful, the flexible plumes are fragile.
2. Put the fee on a flat metal surface (for example, aluminum foil).
3. Heat it with a hair dryer on the back side (70-90°C) for 3-5 minutes.
4. Place a load on top (such as a small weight) and leave to cool for 30 minutes.
5. Get your phone together and check it.

This method requires experience in disassembling electronics, and if you've never held a soldering iron, you'd better leave the repair to the professionals.

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Flexible boards can't bend back with your hands, and that's going to cause microcracks on the tracks, and you're only using heat and uniform pressure.

Method 5: Preventing Deformations – How to Avoid Re-Bending

To prevent your Xiaomi from bent any more, follow these rules:

• 🌡️ Control the temperature: Use applications like CPU Monitor for monitoring heating if the temperature is above 55°C, let the phone cool down.
• 🔌 Charge correctly: Do not use "left" charges higher 30W (If your model doesn’t support fast charging. for Xiaomi with HyperCharge (e.g., for example, 11T Pro) only take original adapters.
• 📱 Use stiff rib cases: They spread pressure when you fall. A good option is Spigen Tough Armor or Ringke Fusion-X cases.
• 🚫 Don't put your phone in your back pocket: This is the most common cause of mechanical deformities. If you carry it, use a chest pocket or backpack.

For models with a glass case (for example, Xiaomi Civi) it is recommended to additionally paste a protective film on the rear panel - this will prevent cracks with light impacts.

FAQ: Frequent questions about the deformation of Xiaomi smartphones