How to carefully remove the back cover with Xiaomi Redmi 4X: instructions with photos and warnings

Why Redmi 4X owners decide to take the lid off – and when it really is needed

The back cover of the Xiaomi Redmi 4X is not just a decorative element, but part of the structure that protects the internal components from dust, moisture and mechanical damage. However, there are situations when it has to be removed: replacing the battery, cleaning from dust, repairing plumes or even the banal desire to paste a new protective film, but before you start taking up the screwdriver, you should assess the risks.

The Redmi 4X, codenamed santoni, was released in 2017 and is still popular for its reliability and low price, but it is perimeter-glued rather than latched, like more modern smartphones, meaning that a wrong opening can cause plastic cracks, damage to the fingerprint scanner plume, or even a rupture of the battery connector. If you've never taken your phones apart, you'd better go to a service center.

In this article, we will discuss in detail:

• 🔧 What tools will be needed to safely remove the cover
• 📱 Step-by-step instructions with nuances for Redmi 4X
• ⚠️ Common Mistakes and How to Avoid Them
• 🔄 How to get your phone back without consequences

Preparation: tools and conditions for disassembly

Before you start, make sure you have everything you need, and not having at least one tool can turn a simple procedure into a nightmare with broken latches or screws torn.

Here's the minimum set:

• 🔩 Plastic blade (or mediator) - to separate the body. Metal tools can scratch the plastic.
• 🔧 The screwdriver. PH00 — The usual screwdriver won't work because it's a risk of ripping off the splints.
• 🧲 Magnetic mat or container – so as not to lose small parts (screws, gaskets).
• 🔥 Hair dryer or thermoair station - for softening the glue (optional, but recommended).
• 📸 Smartphone for photography - fix the location of plumes and screws before disassembling.

Also prepare the workplace:

• 🪑 Work at a table with good lighting.
• 🧹 Remove foreign objects – the lost screw can get into the mechanism of the phone.
• ⚡ Turn off the phone and remove it. SIM-You don't have to turn off the battery, but if you're planning to replace it, you should do it first after you remove the lid.

Step-by-step: how to remove the cover from Xiaomi Redmi 4X

Now, to the most critical stage, follow the instructions carefully, every step is important.

Step 1. Heat the body (optional, but recommended)

The glue that the lid is glued to becomes more elastic when heated. Use a dryer at a minimum power (temperature ~50-60°C) and warm the edges of the phone for 2-3 minutes. Don't direct hot air to the screen or camera - this can damage the matrix or optics.

Step 2: Separation of the body

Insert a plastic blade into the gap between the back cover and the phone frame. Start at the bottom edge (near the Micro-USB connector) — the glue is usually weaker here. Carefully drive the blade along the perimeter, gradually separating the lid. If you feel resistance, do not push harder, but warm up the area again.

Warm up the edges with a hairdryer (optional)

Insert the shoulder blade in the lower corner

Carefully drive the shoulder blade around the perimeter

Do not press the middle of the lid (there is a battery!)

Fix the separated areas with clamps (if any)

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Step 3: Disconnect the plumes

After removing the cover, you will see the battery and a few plumes:

• 📱 The fingerprint scanner plume is fragile, glued to the lid.
• 🔋 Battery connector – it must be disconnected first if you plan to disassemble further.
• 📶 Antenna contacts – don’t touch them unnecessarily.

To unplug the fingerprint scanner plume, gently shovel it on the side. Don't pull the wires! If the plume breaks, the scanner stops working, and it costs 1/3 of the cost of the phone to replace it.

⚠️ Warning: If the phone doesn't turn on after the lid is removed, check if the battery connector has moved away.

Common Mistakes and How to Avoid Them

Even experienced craftsmen sometimes make mistakes when disassembling the Redmi 4X, and here are the most common ones and ways to prevent them:

Another common problem is that antenna contacts are damaged, and they're located on the sides of the phone, and they're connected to the lid by thin metal antennae, and if you bend or tear them off, the network signal and Wi-Fi will deteriorate, and to avoid this, don't press the lid after separation, gently lift it, starting at the bottom edge.

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If the lid doesn't lend itself, don't try to pull it off with force. Better warm up the problem area with a hair dryer and try again with a spatula. The glue on the Redmi 4X is often applied unevenly, and sometimes it's enough to find a "weak spot."

How to collect the phone back: nuances and tips

Building Xiaomi Redmi 4X after removing the lid requires no less care than disassembly.

1. Checking of plumes and connectors

Before closing the cover, make sure that:

• 🔌 The battery connector sits tightly in the connector.
• 📱 The fingerprint scanner plume is not twisted and properly stacked.
• 📶 Antenna contacts are not bent and touch the corresponding points on the motherboard.

2.Cover glue

If you completely detach the lid, the original glue will not hold it as firmly.

• 🧴 Double-sided scotch 3M — budgetary option, but it is weak.
• 🔥 thermals (B-7000) — It is more reliable, but requires careful application.
• 🛠️ Special glue for smartphones (for example, Tesa 61395) – the best choice.

Apply a thin layer of glue around the perimeter of the lid, avoiding hitting the speaker, microphone or camera. After gluing, place the phone under the press (for example, a stack of books) for 10-15 minutes.

⚠️ Warning: If the phone doesn't turn on after assembly, but when you connect to charging, it shows an indication, there's a problem with the battery connector. Take the phone apart again and check if it's sitting tight.

When it is better not to take risks: cases in which you should contact the service

While the Redmi 4X is one of Xiaomi’s most maintainable models, there are situations where disassembly alone can do more harm than good.

• 💥 The phone fell into the water or was subjected to severe vibration (risk of detachment of plumes).
• ⚡ After a fall, the screen or touchscreen does not work (matrix or connector may be damaged).
• 🔋 The battery swelled (disassembly in this case is dangerous - the risk of fire!).
• 📡 Network or Wi-Fi signal problems after self-disassembly (damaged antenna contacts).

The cost of dismantling in the service usually does not exceed 500-1000 rubles, but you will get a guarantee for the work done. If you decide to act on your own, but something went wrong, do not try to repair the consequences without experience. For example, a damaged plume of the fingerprint scanner can not be restored with a soldering iron - it can only be replaced.

Alternatives: When the Disassembly is Not Needed

Sometimes the goal you wanted to remove the lid for can be achieved without disassembly.

1. Replacement of the protective glass on the camera

If the glass above the camera is scratched, it can be replaced without removing the lid. There are special stickers for the Redmi 4X that are glued over the old one, the main thing is to thoroughly clean the surface of dust and grease before sticking.

2.Pulture cleansing

Dust in the speaker or micro-USB connector can be removed by:

• 🪥 Toothbrush with soft bristles - to clean the speaker grille.
• 💨 A compressed air canister - for blowing dust out of connectors.
• 🧴 Cotton swab dipped in alcohol - to clean contacts (do not overdo it with moisture!).

Checking the battery

If the phone is running out quickly, it's not always the battery's fault.

• 📊 Consumption statistics in Settings → Battery – perhaps some application “eats” the charge.
• 🔄 Resetting settings to factory (save data!) – sometimes helps with software failures.
• 🔋 Calibrate the battery – discharge the phone to 0%, then charge to 100% without interruptions.

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Always assess the risks before disassembling. If you can reach the goal without opening the case, choose a safer way. Disassembling the Redmi 4X requires no special skills, but mistakes are expensive.

FAQ: Answers to Frequent Questions