Why installation SIM-Xiaomi cards can cause difficulties
Xiaomi smartphones have long gained popularity due to the combination of affordable prices and advanced features, but even with such a technique sometimes raise questions. SIM-card, especially if you are first encountering hybrid slots or custom nano-SIM sizes. Unlike older push-button phones where the tray was pushed with a finger, modern Xiaomi requires the use of a special key, and an installation error can lead to damage to contacts or even break the slot.
There is also some confusion between the models: somewhere the slot is combined with a memory card (Redmi Note 12, POCO X5), There are two physical supports. SIM-It is equally important to consider the region of purchase - some versions of smartphones for the Chinese market do not have a slot under the name Xiaomi 13 Pro, Black Shark 5. SIM This article will help you understand all the nuances, avoid typical errors and quickly activate mobile communication.
What are they? SIM-The cards support Xiaomi smartphones
All modern Xiaomi devices (released after 2018) use the nano-SIM format (4FF) - the most compact standard measuring 12.3 Γ 8.8 mm. If you have an old micro-SIM or a full-size card, it will have to be cropped or replaced in the operator's office. Importantly, even if the card is visually fitting in size, it may not work due to improper cropping - the contact area must remain intact.
As for the quantity SIM-There are three options:
- π± Two Physical Nano-SIMs (Dual SIM): Supported by Xiaomi 13/14 series, Redmi K60, POCO F5. Allows two operators to use the number at the same time.
- π Hybrid slot (SIM + microSD: found in the Redmi Note 11/12, POCO X4. Here's where you have to choose. SIM-memory-card.
- π² One nano-SIM + eSIM: relevant for flagships like Xiaomi 13 Ultra (European version) or Mix Fold 3. SIM virtual.
Before buying a smartphone, check its modification: Chinese versions (with the CN marker in the title) often lack a slot for physical SIM, working only through eSIM. For example, Xiaomi 12S Ultra (CN) does not support traditional cards.
Preparation for installation: what will be required
Before you start the installation, check the availability of all the necessary tools and details:
- π The key to extract the tray (company with the smartphone) If you lose it, a paper clip or needle with a diameter of 0.8 mm will do.
- π± Nano-SIM of the desired operator (activated or new to activate).
- π Charge at least 20% - at the first turn on after installation SIM The phone can update the firmware or configure the network.
- π‘ Stable network signal β if you activate a new card, check the carrier coverage in your area.
If you are switching from another phone, donβt forget:
- Save contacts to the cloud (Settings β Google β Backup).
- Transfer SMS (if necessary) through applications such as SMS Backup & Restore.
- Remove the old SIM from the previous device to avoid activation conflicts.
π‘
If you have a hybrid slot and you plan to use two SIM-Cards, buy a microSD adapter β nano-SIM, which will allow you to insert the memory card into the slot second SIM (But there's only one that's gonna work!).
Step-by-step instruction: how to insert SIM-map
The installation process is the same for most Xiaomi models, but there are nuances depending on the location of the slot.
- Turn off your smartphone (required!) This will prevent contact damage when you remove the tray. Press and hold the power button, then select Turn off.
- Find a slot for SIM-On most models (Redmi Note) 10/11/12, POCO X3/X4) It's on the left end. It's on the flagships. 13/14, Mix 4) β on the right end or the top edge. In foldable smartphones (Mix Fold) 2/3) β downside USB-port.
- Remove the tray: Put the key (or paper clip) into a small hole next to the slot before you click. The tray will extend 1-2 mm - carefully pull it with your fingers. If the tray does not come out, do not apply force - check if the key is skewed.
- Install. SIM-map: Put the nano-SIM in the tray chip down, matching with the notch. For hybrid slots, select the side: SIM1 (primary SIM2/microSD. If you use two SIM, The second is similar, but can only support 2G/3G (Check the specifications of the model).
Put the tray back in.
Turn on the phone.
βοΈ Check before turning on the phone
In Xiaomi models with support 5G (For example, Redmi Note 12 5G or POCO F5 5G) second-second SIM-The card can only work on networks 4G/3G, Even if the operator supports 5G. This is a hardware limitation β check the specifications of your model.
Activation. SIM-maps and network settings
After installation SIM-Xiaomi smartphone should automatically connect to the network, but sometimes you need to manually configure:
- Check status. SIM: Go to Settings. β SIM-If the number is on fire Inactive, click on the SIM and select Turn on.
- Set up an APN (if the Internet is not working): In the same menu, select the Access Point Name (APN). Click Add and enter your operator's settings (you can find them on the official website or request support). For MTS: Internet.mts.ru, APN Internet.mts.ru; for Beeline: Internet.beeline.ru.
- Select priority. SIM for calls/internet: In Settings β SIM-Cards can be assigned to the main SIM call-in, SMS And mobile Internet. 5G It's also the mode. 5G/4G/3G/2G.
- Update your firmware (if necessary): Go to Settings β About Phone β System Update. If a MIUI update is available, install it β this can solve network connection problems.
If after all the manipulations the network does not appear, try:
- π Reboot the phone.
- πΆ Manually select the operator in the Settings β Mobile network β Network operators.
- π§ Reset network settings (Settings) β SIM-map β Resetting mobile network settings).
What to do if your phone canβt see SIM-map?
Frequent Mistakes and How to Avoid Them
Even experienced users sometimes make mistakes when installing SIM-Here are the most common ones and the ways to solve them:
| Mistake. | Reason. | Decision |
|---|---|---|
| The phone can't see. SIM-map | Incorrect installation (chip up) or contamination of contacts | Remove the tray, check the SIM position and wipe the contacts with a lilaless cloth |
| Slot is not moving. | A jammed mechanism or too thick instrument is used | Try another key (such as a paper clip) or contact the service |
| No network after installation | Non-activated SIM or incorrect APN settings | Check the status of the card with the operator and set up the APN manually |
| The second SIM stops working after restarting. | Operator profile conflict or MIUI error | Update your firmware or reset your network settings |
| Smartphone overheats when using mobile Internet | Communication module problems or incompatibility with 5G network | Turn off 5G in settings or check your phone in the service |
Special attention should be paid to hybrid slots, for example, in the Redmi Note 12 when installing two slots. SIM-The second card can only work on the network. 2G, Even if the operator supports 4G. This is a hardware limitation and cannot be circumvented by software.
β οΈ Warning: Never use metal objects (knives, forks) to remove the tray SIM-This can damage the locking mechanism or close contacts on the board. If the key is lost, buy the original one from the service center - its cost rarely exceeds 100-150 rubles.
Features of SIM installation in foldable smartphones and flagships Xiaomi
Foldable phones Xiaomi Mix Fold 2/3 and flagship models (Xiaomi 13 Ultra, 14 Pro) have their own nuances:
- π± Dual slots with eSIM support: Mix Fold 3 can use one physical nano-SIM and one virtual eSIM. To activate eSIM, download the operator application (for example, MTS Connect or Beeline eSIM) and follow the instructions.
- π Automatic network switching: the flagships implemented the function of Dual SIM Dual Standby (DSDS), It allows you to communicate with two operators at the same time, but when you call on one phone, you call on the other. SIM second-only shutdown.
- π‘ Support 5G both SIM: Unlike budget models, flagships (Xiaomi 14) can work in the future. 5G on both cards, but with a limitation: only one SIM may be used 5G moment-to-moment.
For foldable smartphones Mix Fold is also relevant:
- The slot is located on the lower edge, which is uncomfortable with the screen open - it is better to remove the tray in the folded state.
- When using two physical SIMs, one of them can heat up more because of the location of the antenna module.
If you plan to use eSIM, please note that not all Russian carriers support it. eSIM is available at:
- πΆ MTS (for postpaid tariffs).
- πΆ Beeline (limited number of regions).
- πΆ Tele2 (only for corporate clients).
β οΈ Note: When buying Xiaomi from Chinese online stores (e.g. AliExpress), check the firmware version. Many models for the Chinese market do not support Russian frequencies. 4G/5G, even if the physical SIM Check the compatibility on the FrequencyCheck website.