Xiaomi Redmi 4A is one of the most popular budget smartphones released in 2016. Despite its simplicity of design, disassembling this device requires caution: improper removal of the lid can damage the plumes, buttons or even the battery.
Many users are faced with having to disassemble the Redmi 4A to replace the battery, repair the speaker or clean the connectors, but the design of the smartphone has its own peculiarities: the lid is attached not only to the latches, but also to the adhesive tapes, and the battery is soldered to the board, we will examine each step in detail, specify the necessary tools and warn against dangerous actions.
Important: If you've never taken a smartphone apart before, we recommend that you practice on a broken device first or watch video instructions. Incorrectly removing the lid can take away the warranty (if it's still valid) or disable the device.
Preparation for disassembly: tools and security measures
Before you start removing the lid, prepare the workspace and the necessary tools. Redmi 4A does not require professional equipment, but without special devices, the risk of damage increases.
Here's what you're gonna need:
- 🔧 Plastic blade (or mediator) to lick the lid. Metal tools can scratch the body.
- 🔥 Hair dryer or thermo-air station - for softening the glue (temperature not higher than 60)°C).
- 🧲 Suction cups (optional) - help separate the lid from the body.
- ⚡ Screwdriver. T3 or T4 — screw-up.
- 📦 Container for screws - so as not to lose small details.
- 🧴 Isopropyl alcohol - to remove glue residues.
Also prep an antistatic bracelet or at least touch a grounded metal object to remove static electricity. The Redmi 4A board is sensitive to discharges - even a mild shock can disable a Wi-Fi module or camera.
⚠️ Warning: Don't use a knife or screwdriver to lash the lid! metal easily cuts through plastic and damages plumes under the lid.
Step-by-step: how to remove the back cover
The process of removing the Redmi 4A cover consists of several steps.
Step 1: Turn off your smartphone and remove it. SIM-map.
- Press the power button and select Turn it off.
- Get the tray for you. SIM-card with a paper clip (hole on the right).
Step 2: Heat the edges of the lid.
- Turn on the dryer at minimum power and warm up the edges of the smartphone around the perimeter for 1-2 minutes.
- Do not direct hot air to the screen or camera, as this can damage the matrix.
Step 3: Put the lid on a plastic spatula.
- Start with the lower right corner (near the charging connector).
- Carefully insert the shoulder blade into the slot and slowly lead along the edge.
- If the lid fails, warm up the area again.
Is the smartphone off?|Whether extracted SIM-map?|Whether tools are prepared?|Whether the edges of the shell are heated?-->
Step 4: Remove the cover completely.
- After all the latches are snapped, lift the lid from the bottom edge.
- Don’t pull too much – there are plumes of volume and power buttons under the lid.
- Gently remove the plumes (if they interfere) or simply put the lid aside.
Now you can see the interior design of the Redmi 4A: the battery, the motherboard and the camera. Don't touch the board with your bare hands -- use gloves or just grab the edges.
What to do if the lid is not removed?
Common Mistakes and How to Avoid Them
Even experienced users sometimes make mistakes when disassembling the Redmi 4A. Here are the most common ones and ways to prevent them:
| Mistake. | Effects of consequences | How to avoid |
|---|---|---|
| Use of metal tools | Scratches on the body, damage to plumes | Use only plastic blades |
| Overheating by a hairdryer (>70°C) | Deformation of plastic, detachment of the screen module | Keep the hair dryer at a distance of 10 cm, use a minimum temperature |
| The lid's jittery. | Breaking of button or antenna plumes | Slowly check resistance |
| Touching the board without grounding | Disrupting Wi-Fi, Bluetooth or Camera | Use an antistatic bracelet or touch grounded objects |
Another common problem is that the battery's adhesive tape is damaged, so if you're planning on putting your smartphone back together, don't tear it off completely. It's enough to gently separate it from the body so you can put it back in place.
⚠️ Warning: If the smartphone stops turning on after removing the lid, check to connect the battery plume. Often it departs when it is not neatly dismantled.
What to do after the lid is removed?
When the lid is successfully removed, you can access the internal components of the Redmi 4A.
- 🔋 Battery replacement is the most common reason for disassembly. - Redmi battery 4A It is soldered to the board, so you will need a soldering iron to replace it.
- 📞 Clean connectors – charging port, speaker or microphone from dust and dirt.
- 📸 Camera Repair – Checking the plume or replacing the module.
- 🔊 Replacement of the speaker – if the sound becomes quiet or distorted.
If your goal is to replace the battery, consider: the original batteries for the Redmi 4A have a capacity of 3120 mAh. Don’t buy cheap analogues – they can swell or quickly fail.
Use isopropyl alcohol and a soft brush to clean the connectors. Do not use cotton cotton cotton cotton swabs, because the fibers can stay inside and cause short circuits.
💡
If you're removing the cover to replace the display, take a picture of all the plumes and screws before you disconnect, which makes it much easier to reverse assemble.
How to reassemble the smartphone back?
Assembling the Redmi 4A after repair requires no less care than disassembling.
- Check all the plumes – they should be tightly connected to the connectors on the board.
- Make sure the integrity of the adhesive tapes – if they break, replace them with new ones (you can buy them in radio parts stores).
- Fix the lid evenly - start at the top edge, then snap the sides, and lastly - the bottom.
- Conduct a test – turn on your smartphone and check the operation of all buttons, speaker and cameras.
If the buttons don't work after assembly, it's likely that the plume has disconnected or been damaged. Take the phone apart again and check the connection.
If the screen is not turned on, but the smartphone vibrates when you press the power button, the problem may be in the display plume or battery, in which case it is better to contact the service.
💡
The most common assembly error is uneven lid snapping, which leads to backlashes and creaks, always start at the top and go down.
When is the best time to contact the service?
Not all breakdowns can be repaired on your own, but here are some cases where it is wiser to entrust repairs to professionals:
- 💥 The smartphone does not turn on after falling or getting moisture.
- 🔥 The battery is swelling - it is dangerous for health!
- 📶 Network problems (not catching) SIM-map, no signal).
- 🖥️ Artifacts on the screen (strips, flickering, broken pixels).
The cost of repairing Redmi 4A service centers is usually low - from 500 to 2000 rubles depending on the breakdown. If you are not sure of your skills, do not risk: improper repairs can cost more than the services of a master.
Also, look at warranty stickers, which if damaged, automatically remove the warranty on the smartphone (if it is still valid), and some services may refuse to repair the warranty after seeing autopsy marks.