Installation SIM-The cards in the Xiaomi Redmi smartphone seem to be a simple procedure, but in practice users face typical problems: the tray is not removed, the SIM is not recognized or the phone requires a restart. Especially difficult for beginners who for the first time hold a device with a hybrid slot or a combined tray under two. SIM + MicroSD.
In this article, we will analyze all possible scenarios: from the classic models of Redmi Note. 10/11 before the Redmi flagships K60 budgetary POCO M5. You will learn what tool is needed to extract the tray, how to cut properly SIM-Nano-based maps, and what to do if your smartphone doesn't see the network after installation, and unique life hacks for models with non-standard slots (e.g. Redmi) 12 pull-out).
What tools will you need
Before you start installing, prepare the necessary accessories, without which you risk damaging the tray or the smartphone itself.
- 🔧 Paperclip or needle (company with the phone; if lost, an unbended stationery clip will fit).
- 📱 Nano-SIM (required! old micro-SIMs won't work without pruning).
- 🔍 Flashlight (will help to see the slots in the tray, especially in models with a black case).
- 🧲 Magnet (optional, but useful if the paper clip has fallen inside the body).
If you have a hybrid slot model (for example, Redmi Note 12 Pro+), where the second slot is combined with MicroSD, additionally prepare:
- 💾 MicroSD card (see the maximum supported volume in the table below).
- ✂️ Pruning adapter SIM (If you are still an old micro-SIM).
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If you don't have a paper clip, use a thin sewing needle or toothpick, but act carefully - the plastic tray is easy to break.
Types of SIM-trays in Xiaomi Redmi: how to determine your own
Xiaomi smartphones are equipped with three types of trays. SIM-You can install cards and memory cards:
| Type of tray | SIM count | Support for MicroSD Support | Examples of models |
|---|---|---|---|
| Single | 1 nano-SIM | No. | Redmi A1, POCO C50 |
| Double. | 2 nano-SIM | No. | Redmi Note 11S, POCO X5 |
| Hybrid | 2 nano-SIM or 1 SIM + MicroSD | Yes (up to 1TB) | Redmi Note 12 Pro, POCO F5 |
To find out the type of tray in your model, check:
- The inscription on the tray itself (usually there are SIM + SD pictograms).
- Features on the official website of Xiaomi in the section "Connection".
- Sticker on the box (the number of supported SIMs is indicated).
⚠️ Attention: In Redmi models K50i and POCO F4 GT The tray is not fully extended - it must be pulled to the click, otherwise SIM-map won't fall into place.
Step-by-step instruction: how to insert SIM-map
Follow this algorithm to avoid errors:
- Turn off your smartphone. This is not necessary, but it is recommended to avoid failures when initializing the network.
- Find the tray. It's usually on the top or side of the tray (Redmi 10C on the right, POCO M4 Pro on the left).
- Put the paperclip in the hole and press until you click. The tray should extend 2-3 mm.
- Take the fingers out of the box (do not pull the paperclip!).
- Put it down. SIM-card to the golden chip down slot. For hybrid trays, select priority: second SIM microSD.
- Put the tray back in. You'll hear a click.
The tray is inserted to the end.|SIM-card doesn't stand for edges|Chip contacts unscratched|The phone doesn't overheat.
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If the tray is not fixed, check:
- 🔄 Are there any signs of the snare (there is a snare on the snare "SIM1" or "SIM2").
- 📏 Size SIM-Cards (Nano-SIMs must be used) 12.3 × 8.8 mm).
- 🧹 Cleanliness of contacts (wipe with alcohol if there is oxidation).
Single (1 SIM)| Double (2 SIM)| Hybrid (SIM + MicroSD)| Don't know-->
Frequent Mistakes and How to Avoid Them
Even experienced users sometimes make mistakes when installing SIM, and here are the most common:
⚠️ Attention: If after installation SIM The phone says "No network", do not rush to bring it to the service. 90% of the time the problem is solved by rebooting or manually selecting the operator in the settings (Settings) → SIM-maps and mobile networks → Choice of network).
- 🚫 If you put it in the crooked tray, the contacts. SIM Solution: pull out the tray and insert it straight, no skewing.
- 🔋 Phone not switched off, hot replacement in rare cases SIM It causes the communication module to fail. It's always best to turn off the device.
- ✂️ Miscuttled SIM. If you cut micro-SIM with scissors, check if there are no plastic burrs left at the edges.
- 📶 Some Redmi (especially for the Chinese market) do not support Russian frequencies. 4G. Check compatibility on the operator’s website.
If your phone doesn’t see the SIM, try:
- Wipe the tray contacts and SIM-cards with a lilac-free fabric (do not use paper!).
- Insert the SIM into another slot (if there are two).
- Update the firmware through Settings → About the phone → System update.
What to do if the card breaks inside the phone?
Features for specific Redmi models
Some Xiaomi smartphones have unique nuances when installing SIM. Here are the most notable:
| Model | Feature | Decision |
|---|---|---|
| Redmi Note 11 Pro+ 5G | The tray is extended only when pressed at an angle of 45°. | Press the paperclip not perpendicularly, but slightly obsessively. |
| POCO X4 GT | The hybrid slot is locked if you insert the MicroSD into the SIM. | First, insert the SIM, then the memory card. |
| Redmi 10A | A tray without a fixator - can fall out when shaken. | Then, check if it has been sliding (should be a click). |
| Redmi K60 Ultra | It supports eSIM, but only a single nano-SIM. | For the second. SIM Use eSIM (setting up in Settings) → SIM-map). |
In the Redmi 12 and later, the tray is equipped with a smooth pull mechanism - you do not need to apply force. If the tray does not come out, check if dirt has entered the slots. Use compressed air (keyboard canister) to clean.
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In smartphones with support 5G (For example, the Redmi Note 12 Pro+ 5G) SIM-The card must be installed in the slot SIM1 for the correct operation of the new network.
How to cut SIM-nano-format
If you have an old micro-SIM or even a full-size SIM, you can trim it to a nano-sized SIM.
- 📏 Line (for markings).
- ✏️ Pencil (to draw lines).
- ✂️ Scissors or stationery knife (sharp!).
- 🧠 Template (you can print from the official website of Xiaomi).
Step-by-step:
- Put the SIM on the template and circle the nano-SIM contour with a pencil.
- Carefully trim along the line, leaving 1-1.5 mm of stock.
- Clean the edges with sandpaper (granularity 1000+).
- Check if the SIM touches the edges of the tray when installing.
⚠️ Attention: If you are circumcised SIM If you have a chip that's not in the center (for example, Tele2), you'd better order a new card in the cabin.
An alternative is to use a special stapler for SIM (costs ~300 rubles), which trims the card in one click, minimizing the risk of error.
What to do if your phone can’t see SIM-map
If after installing SIM smartphone does not catch the network, act on this checklist:
Reboot the phone|Check the correct installation|Drinking contacts with alcohol|Try another one. SIM-map|Update firmware|Reset the network settings
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If nothing helps, the problem may be:
- 📡 Hardware malfunction (damaged communication module).
- 🔄 Software failure (reset to factory settings needed).
- 📱 Operator incompatibility (e.g. Redmi for India does not support Russian frequencies).
For diagnosis:
- Insert the SIM into another phone – if it works, the problem is your Redmi.
- Check the IMEI (*#06#) if it's unknown, it's a hardware problem.
- Install Network Signal Guru (to show if the phone sees the network).
If the smartphone is warranty, contact the service center Xiaomi. Otherwise, repair module communication will cost 1,500-3,000 rubles.