Smartphones brand Xiaomi has long gained popularity due to the excellent ratio of price and functionality, and the model Redmi 6 has become a real hit in its segment. SIM-Cards simultaneously, allowing users to separate personal and work contacts or use tariffs of different operators to save on calls and the Internet. However, new owners often have questions about the physical installation of the chips, since the design of the tray has its own nuances, which differ from older or, conversely, flagship models.
The installation process does not require special technical skills, but requires care and care to avoid damaging fragile contacts or the tray itself. In this article, we will discuss in detail where the slot is, which side to place the cards and what to do if the device does not see them. Proper installation from the first time ensures stable operation of the communication module and no problems with registration on the network.
Before you start disassembling, make sure the phone is turned off, although modern standards allow hot replacement, but for the Redmi 6 and system stability, it is better to be safe. SIM-It is important to understand that the tray in this model is combined, and it is quite easy to confuse the sides or form factors, if you do not know the specifics of the design.
Slot location and tool preparation
The first step in the installation process is to detect the tray for SIM-In the Xiaomi Redmi 6, it is located on the top end of the device’s body, a standard location for many smartphones in the series, but users sometimes confuse it with a microphone or infrared port hole if they are present on the model. The tray is a thin metal or plastic frame that completely hides inside the case and has a barely noticeable contour.
To remove the tray, you need to use a special tool, a metal clip included in the delivery. If the original paper clip is lost, you can use a regular sewing needle or a very thin pin. It is strongly recommended not to use thick objects such as toothpicks (they break inside) or large diameter stationery clips, as this can lead to jamming of the mechanism or damage to internal contacts.
⚠️ Attention: Don't put too much effort into pressing the extraction hole. If the tray doesn't come out easily, you may have gotten into the mechanism incorrectly, and trying again at a different angle will be more effective than pressurizing the tray.
Find a small circular hole next to the tray frame on the top edge. Put the tip of the staple perpendicular to the phone's body and smoothly but confidently push inside. You should hear a slight click and the tray will push out a little. After that, gently pull it with your fingers to remove it completely. Be careful not to lose the tiny rubber pad, if it's on the end of the tray, it protects the contacts from dust.
Types. SIM-maps and features of the Redmi 6 tray
The Redmi 6 is equipped with a combined tray that supports the operation of two models. SIM-This is the smallest of the existing standards, and the use of adapters or larger cards (Micro-SIM or Mini-SIM) without professional trimming is impossible. Often users try to insert an old-format card by force, which causes the reader to break, so it’s important to make sure your chips are Nano-compliant.
The design of the tray in Xiaomi Redmi 6 involves two separate map spaces, but they are located on different sides of the plastic frame. This distinguishes it from some other models where the cards are next to each other. One card is mounted on the front side of the tray and the other on the back, which requires careful assembly, because it is very easy to turn the tray over and insert it with the wrong side, which can block the phone or damage contacts.
Notice the bevelled corner of the map. SIM-And the card has one of the corners cut off, and that cut should match the cutout in the tray. If the card doesn't fall straight into the recess, don't push it. Gold pins should look down (towards the phone board) when installed in the main slot, but in Xiaomi’s combined trays, the sides may differ depending on the specific device revision.
Can I use a memory card instead of a second SIM card?
Step-by-step instructions for installing two SIM-map
The installation process requires a consistent process to avoid confusing the sides of the tray. First, take the extracted tray and examine it. You will see that one side has a cutout for one Nano-SIM, and when you flip the tray, a cutout for the other. In some Redmi 6 revisions, both cards are mounted on one side, but most of the time, the two-side scheme is used.
Take the first one. SIM-The operator's card and place it in a recess on one side of the tray. Make sure the bevelled angle matches the tray shape and the golden contacts look down (inside the tray, if viewed from above, or outward, depending on the specific frame design, but usually the contacts are directed towards the phone board.
Now, turn the tray over gently with the other side. SIM-Insert the second chip in the same way, keeping track of the matching angle, after you set both cards, check if they are wobbly. If done correctly, the cards will be fixed in their nests by a tight landing.
☑️ Pre-installing check
Now the most important thing is to put the tray back into the phone. Take a good look at the end of the device: the tray should be completely shaped like the hole. Usually there's a small bevel or protrusion on the tray that matches the shape of the hole. Put the tray smoothly, without jerking. If you feel resistance, don't push, take out and flip the tray over with the other side.
Table of compatibility and specifications of the tray
For a better understanding of your device configuration, read the specifications of the slot, which will help to avoid errors when choosing memory cards or SIM cards.
| Parameter | Slot 1 | Slot 2/Hybrid |
|---|---|---|
| Type of card | Nano-SIM | Nano-SIM / microSD |
| Support for 4G LTE support | Yes (main) | Yes (secondary) |
| Max, memory capacity. | - | up to 256GB |
| Hot replacement. | Supported | Supported |
As you can see from the table, both slots support modern communication standards, which allows you to use high-speed Internet on either card. SIM-This is the physical limitation of the hybrid connector.
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Use the originals. SIM-Carrier cards: Hand-cut cards from Micro or Mini formats may have uneven edges, causing the tray to get stuck inside the smartphone.
Network settings after installation
Once you insert the tray back and turn on the phone, the system MIUI automatically detect new SIM-You may see online registration notifications on the screen, and if the cards are new, you may need to enter them. PIN-Coca, which is usually listed on a plastic base, holding a SIM card when buying.
To manage two cards, go to the settings menu. The path usually looks like this: Settings → SIM-You can assign which card will be used by default for voice calls and which for mobile Internet, and you can configure the use of the second card only for certain contacts.
In the Mobile Internet section, select your preferred SIM-Redmi 6 has a quick switching feature, but to save charge, it is better to keep active data transfer on only one card, if the second one is used exclusively for calls. The system allows flexibility in setting priorities, which is especially convenient for travelers or those who use fares with different coverage.
Possible problems and ways to solve them
Sometimes, after installation, users find that the phone sees only one card or does not see any. First of all, check whether the tray is inserted correctly. A common mistake is to install the tray upside down. Also make sure that the protective film from the contacts is placed on the tray. SIM-The card is removed completely, as even a microscopic layer of plastic breaks the contact.
If the phone says no SIM-If you try to wipe the chip contacts with a soft dry cloth, fat spots or oxidation can interfere with reading, and it's worth checking if the tray itself is deformed. In budget models, the metal tray can be thin, and with careless extraction, it sometimes arches, ceasing to tightly press the card to the contacts.
⚠️ Warning: If the phone heats up in the upper end or discharges quickly after installing the cards, immediately remove the tray.This may indicate a short circuit due to an incorrectly inserted card or a defect in the card itself. SIM-map.
In rare cases, the problem can be software-based. Try resetting your network settings to factory settings. Go to Settings → Advanced Settings → Restore and Reset → Reset your Wi-Fi, mobile internet and Bluetooth settings. This action will not delete your personal data, but will return network settings to their original state, which often helps with network login errors.
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90% of problems with the definition of the second SIM card in Redmi 6 are solved by correctly reinstalling the tray with respect to the orientation of the bevelled angle and cleaning the contacts.