Modern smartphones such as the flagship Xiaomi Mi 10 offer users advanced communication technologies, including support for fifth-generation 5G networks. However, to take advantage of the full capabilities of mobile Internet and voice communication, you need to properly install the communication module. Despite the apparent simplicity of the procedure, careless actions can damage the tray or card itself, which will require expensive repairs.
In this article, we will discuss the installation process in detail. SIM-We will also look at the typical errors that users make when setting up the device for the first time, and how to prevent them.
Proper installation ensures stable signal and durability of the contact group of the device. Before starting work, make sure that you have an original paper clip or a special key on hand, which is included in the delivery, this will avoid accidental scratches on the case or slipping of the tool.
Preparation for installation and search for tray
The first step is to visually inspect the body of your Xiaomi Mi 10. The SIM card tray is located on the lower end of the device, to the left of the USB Type-C connector. It is a narrow oblong frame that fits tightly to the body to ensure tightness. It is important to note that this model uses a combined slot, which imposes certain restrictions on the configuration of the cards.
To extract the tray, you need to find a special small diameter hole next to the frame. Take a metal key (clip) and insert it perpendicularly into the hole. Press confidently, but without undue effort, until you feel a slight click and the spring mechanism pushes the tray out.
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Use only the original staples or a thin needle.The paper clips may be too thick and damage the tray's internal extraction mechanism.
After extraction, carefully examine the tray. One side usually has a notch for a Nano-SIM card, and the other side has space for a second card or memory card, depending on the regional version of the device. The tray surface often has a matte coating to prevent finger slip.
Features of formats and types SIM-map
The Xiaomi Mi 10 smartphone supports exclusively the Nano-SIM format.This is the smallest of the existing plastic card standards, and attempts to insert Micro-SIM or Standard-SIM without special cropping or adapter are physically impossible without the risk of damaging the device.
The use of adapters can cause the tray to jam inside the case, and it will be impossible to remove it without disassembling the smartphone. In addition, the adapter can shift and disrupt contact with the motherboard pins, which will cause a network reading error or constant search for a signal.
Why don't you cut it? SIM-map?
It is important to consider that the Xiaomi Mi 10 supports Dual SIM technology, which allows you to use two active SIM cards at the same time. However, in some versions (usually global), the second slot can be hybrid, meaning you have to choose between two SIM cards or one SIM card plus a MicroSD memory card.
Step-by-step installation instructions
The installation process requires care and calmness. Put your smartphone down on a soft, clean surface to avoid scratching the display and body. Make sure your hands are dry and the room is well lit.
☑️ Checklist before installation
Take the extracted tray and put a SIM card on it. Notice the bevelled corner of the map, which should match perfectly the bevelled angle of the notch in the tray. If the card lies correctly, it should not protrude beyond the edges of the frame and stagger.
Carefully insert the tray back into the smartphone hole. Make sure the tray enters smoothly, without skewing. No force: if the tray does not enter easily, flip it over or check the orientation of the map. Once installed, the tray should become flush with the body without forming steps.
Turn on the device. The shell Android system. MIUI It will automatically detect a new SIM card if the card is secure. PIN-If you have a valid login, you'll see the signal level and network type in the upper right corner.
Setup of two SIM cards in MIUI
After the two cards are physically installed, you need to configure their logical operation in the system. MIUI It offers flexible two-number management tools. Go to the Settings menu → SIM-Maps and mobile networks to see the list of installed modules.
Here you can assign a priority card for mobile Internet, which is a critical parameter, because the data rate depends on the coverage of the selected operator, and you can also configure use cases: for example, one card for calls, another card exclusively for SMS or registration in instant messengers.
| Parameter | Description | Recommendation |
|---|---|---|
| Mobile Internet | Selection of a data transfer card | Choose the operator with the best 4G/5G coverage |
| Default calls | Map for outgoing calls | A card with cheap minutes or unlimited |
| SMS default | Message map | Any active card |
| 5G mode | Use of fifth generation networks | Insert for maximum speed |
A convenient feature is that you can switch the card right while dialing, and in the dialer interface, you can choose which number to call from by simply clicking on the corresponding button under the contact, which eliminates the need to constantly change the settings in the menu.
Solution: Map not found
Sometimes after installation, users are faced with a message «SIM-No card found" or "No net. First of all, check if the tray is inserted correctly. Even millimeter skewing can disrupt the contact. Try removing the tray, wipe the contacts of the card with soft dry cloth and insert again.
The second common cause is a software glitch in the communication module, and try to go to settings and temporarily turn on and then turn off Flight Mode, which will force the smartphone's radio module to restart and force it to re-interview slots.
⚠️ Note: If you are using hand-cutting SIM-map, make sure that the thickness of the plastic has not increased due to glue or residues of the base.
You should also check your network settings. Make sure that in the Settings section → SIM-maps and mobile networks → The preferred network type is selected 5G (recommended 4G/LTE. Sometimes automatic network selection works incorrectly in areas of uncertain reception, and manual switching helps stabilize the connection.
Security and card retrieval
One of the key features of modern Xiaomi smartphones is support for “hot swap” (Hot Swap), which means that in theory, you can extract and insert a SIM card without turning off the device. However, to avoid software conflicts and loss of contact data (if stored on the card), it is recommended to use the software shutdown function.
Before you physically extract the card, go to the settings and press the Turn off button in front of the corresponding slot. Wait for the network indicator to disappear. Only then you can use the paper clip to extract the tray, which ensures that the operating system correctly completes all the background processes associated with telephony.
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Always programmatically disable SIM-card before retrieval, even if the phone supports hot replacement, this prevents database errors contacts and malfunctions of messengers.
Store SIM cards in special plastic holders or in their original packaging. Do not leave them on the table with contacts upwards, as static electricity or dust can damage the sensitive chip. Careful attitude will extend the life of the communication module.