Installation of a new SIM-The cards in the smartphone are one of the first and most important procedures faced by the owner of Xiaomi Redmi Note 7. Despite the apparent simplicity, the process requires care, as improper installation can lead to the fact that the device will not see the network of the operator. In this article, we will analyze in detail all the nuances of working with a card tray in this model.
Redmi Note 7 is equipped with a combined slot, which means the possibility of installing two SIM-Nano-SIM or one-size-fits-all cards SIM-Understanding the design of the tray is critical to the proper operation of the communication module. We will look not only at the physical installation, but also at the software configuration after the device is turned on.
Before you start, make sure you're in a well-lit place and your hands are dry. Any moisture or static electricity can be dangerous to electronics. Next, we'll move on to tool preparation and directly removing the tray from the smartphone case.
Preparation for SIM card installation
The first step is to prepare the necessary tools. Complete with the Xiaomi Redmi Note 7 usually comes a special metal clip designed specifically for the extraction of the tray. If the original tool is lost, you can use a regular stationery clip, straightening one of the ends, or a thin needle.
It's important to make sure that the tool you choose is strong enough and thin enough, and using blunt or too thick objects can damage the mechanism of the spring inside the hole or scratch the frame of the case. SIM-map.
Note the size of the chip. The Redmi Note 7 requires the Nano-SIM format, which is the smallest of the existing standards. If your card is larger, it needs to be gently broken down by punching or contacting the carrier's salon for a replacement.
⚠️ Warning: Never use a knife or other sharp objects with a wide blade to remove the tray, as there is a high risk of damaging the display or side of the smartphone when the tool slips.
It is recommended to turn off the smartphone before starting work, although modern devices support hot replacement. SIM-card, complete power outage ensures that the system correctly recognizes the new card immediately after turning on and there will be no software conflicts drivers.
Removing the SIM card tray
On the right side of the Xiaomi Redmi Note 7, there are volume buttons and an on button. Right below the on button is a small circular hole, which is the place to put the paper clip. Carefully insert the tool into the hole perpendicular to the case.
You apply a steady but steady force, pressing the paperclip inwards. You should feel a slight click, after which the tray will slightly extend out of the body. You don't need to push too hard, the mechanism is triggered by a little pressure on the lever.
Once the tray has appeared from the case, carefully remove it with your fingers. Try not to touch the golden contacts on the card itself or inside the tray, as fatty traces can worsen the connection. Put the tray on a clean, dry surface.
What to do if the tray is stuck?
Orientation and installation of the SIM card
The most critical moment is the correct orientation of the map in the tray.
Put it down. SIM-The gold contacts should be directed downwards to the inside of the tray, the cut corner of the card should match the rounded angle of the plastic frame of the tray, if the card lies flat and does not protrude above the edges of the tray, then you are doing everything right.
The Redmi Note 7 uses a combined slot, which means you can use two configuration options:
- 📱 Install two Nano-SIM cards to use two numbers at the same time.
- 💾 Install one Nano-SIM card and one microSD memory card to expand memory.
- 🚫 Installing two microSD cards is not possible, as a second memory slot without a microSD card. SIM-card not provided.
If you use two of them SIM-If the card is not perfectly cut, it may get stuck, and if it is not perfectly cut, it is better to contact the communication center for a new card so as not to damage the contacts of the smartphone.
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Use the adapter only as a last resort.The card in the adapter is often thicker, which can lead to a jamming tray inside the Redmi Note 7 body.
Inserting the tray back into the smartphone
Once the cards are successfully placed, you need to put the tray back in place. Take the tray so that the bevelled angle matches the shape of the hole in the case. In Xiaomi Redmi Note 7, the tray can only be inserted with one side.
Carefully push the tray into the hole to the point. Don't use excess force. If the tray doesn't enter easily, flip it over with the other side. Forced indentation can break the internal guides or damage the contacts.
The tray should be flush with the frame of the body, forming a single flat surface, and if part of the tray is outwards, it is not latched, in which case, remove it again and repeat the insertion procedure, making sure that the orientation is correct.
Once the tray is installed, you can turn on your smartphone. Press and hold the power button on the right side until the MIUI logo appears. The system will start loading, and after a while, your network indicators should appear at the top of the screen.
Setup of two SIM cards in MIUI
After the device is activated, the system MIUI will automatically detect the installed SIM-If the cards are installed for the first time, the phone may suggest setting them up. Go to the settings menu to manage the communication settings.
To access the main parameters, open Settings and select the item SIM-You can see all the active cards here, you can give them names like "Work" and "Personal" so you don't get confused in the notifications.
The same menu also configures the default settings for different actions, which is especially important for owners of two numbers to avoid unnecessary Internet costs or unexpected calls from the wrong number.
| Parameter | Description | Recommendation |
|---|---|---|
| Default calls | Choice SIM-call-out maps | Set the basic or ask each time |
| Internet by default | Map through which mobile traffic is carried | Choose a tariff with a large package of GB |
| SMS default | Message map | Primary number or tariff |
| VoLTE | Voice transmission over 4G network | Include for better communication quality |
Also in this section, you can activate 4G, preferably for each card separately, which will provide the highest possible mobile Internet speed if your carrier supports fourth-generation networks in your region.
Possible problems and solutions
Sometimes after installation SIM-The smartphone may not see the network, first of all, check if the card is installed correctly. Try to remove the tray and wipe the contacts. SIM-cards with soft dry cloth to remove possible oxides or contamination.
If the problem persists, check if it is activated. SIM-The new cards require activation, which can take anywhere from a few minutes to several hours, and also make sure that the account has funds and the tariff has not expired.
⚠️ If the phone says “No service” or “Emergency calls only”, check if it is blocked. SIM-map PIN-If you enter three times incorrectly, you will need to PUK-code that is on the plastic card holder.
In rare cases, you may need to reset your network settings. This won't delete your personal data, but will return your mobile settings to factory settings. To do this, go to Settings → Connection and Sharing → Reset Wi-Fi, mobile networks and Bluetooth.
☑️ Diagnosing network problems
Another common problem is frequency incompatibility. Redmi Note 7 supports a wide range of frequencies, but the global version may not have some ranges used by operators in regions.
Security and SIM card retrieval
If you need to get out SIM-For example, to install a card on another phone, always do this when the device is turned off. Removing it on a hot card can damage the file system of the card or lose the contacts stored on it if they are not synchronized with the cloud.
When re-inserting, make sure you don't mix up the cards if you use different rates. MIUI remembers the settings for each card, but it is better to check immediately which one is the card. SIM-The card is assigned for mobile Internet so as not to spend traffic of the main tariff accidentally.
Keep the extracts. SIM-This is a card that's in a special plastic holder that you can buy, and it protects the chip from scratches, dust and static electricity.
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Proper physical installation and clean contacts – 90% of the success in solving network search problems on Xiaomi Redmi Note 7.
Compliance with these simple rules will allow you to use mobile communication on your smartphone for a long time and smoothly. Check system updates regularly, as manufacturers often release patches that improve modem performance and connection stability.