Xiaomiβs Redmi series has been one of the most popular phones on the market for many years due to its excellent price-performance ratio. The Redmi 5A, despite its age, is still actively used by millions of users as a reliable βsecondβ phone or device for the elderly and children. However, given its compact design and budget design, the process of installing a communication module can raise questions for those who are first to encounter such a form factor. Unlike modern flagships, there are no automatic mechanisms, and all manipulations require accuracy.
Proper installation SIM-The cards are critical for stable communication, as incorrect contact can lead to permanent connection breaks or complete loss of the network. Owners often have difficulty determining the correct position of the chip or the size of the tray, which is the combined one in this model, and our task is to take a detailed look at each step so that you can activate your number without fear or risk of damage.
Before you start physically affecting the body of your smartphone, you need to prepare the workplace. Make sure you have the operator card, a paper clip (or special key) and possibly a magnifying glass if you have vision problems. Lighting should be sufficient to ensure that the small parts of the tray are clearly visible and the surface is clean and dry to prevent dust from entering the device.
Tool preparation and type determination SIM-map
The first step before any technical manipulation is to check the compatibility of form factors. Xiaomi Redmi 5A smartphone is equipped with a hybrid slot that supports the installation of two nano-SIM cards or one nano-SIM and one microSD memory card. This means that standard or micro-SIM cards will not physically fit without trimming, which is highly recommended due to the risk of damage to the chip.
You need to make sure that your SIM-The card is nano-SIM. This is the smallest of the existing standards, where the plastic frame around the metal chip is virtually absent.If your card is larger, contact the operator's salon for a free replacement or use a special adapter, although in the case of Redmi. 5A The adapter will not help to insert two SIMs at the same time, since the slot is hybrid.
Removing the tray will require a thin metal object. The phone usually comes with a special plastic or metal clip. If the original key is lost, you can use a regular stationery clip, straightening one of the ends. The main requirement is that the tool must be thin enough to enter the hole, and strong enough to withstand pressure, but not sharp enough to damage the internal mechanisms.
β οΈ Warning: Never use sewing machine needles or pins that are too thick to remove the tray, they can get stuck in the mechanism or damage the tray detection sensor, after which the phone will stop seeing the SIM cards.
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If there is no paper clip at hand, you can use a thin part of the carnation earrings or a special metal key from other gadgets, but make sure that its diameter does not exceed 1 mm.
Slot location and tray extraction process
Find a slot for SIM-maps 5A It's quite simple, because it's on the top end of the device. Unlike many modern models where slots are hidden on the side, here Xiaomi engineers chose the classic top placement. This is done for ease of access, but requires the phone to be positioned correctly when extracting.
Put your smartphone down on a soft surface, like a folded napkin or a mouse mat, so you don't scratch the display. Look at the top end: on the right (see above), you'll see a small circular hole next to the elongated tray, and that's where you're going to put the tool.
Insert the tip of the paper clip or key strictly perpendicular to the hole. Don't press too hard; press it with enough confidence but moderate pressure. You should feel a slight click of the spring mechanism, and the tray will extend out a little. After that, gently pull it with your fingers until fully removed.
- π± Place your phone down on a soft surface to protect you.
- π Find the hole on the upper end on the right (when viewed from above).
- π© Insert the paper clip perpendicularly and press until clicked.
- ποΈ Carefully remove the tray with your fingers, without pulling sharply.
βοΈ Pre-extraction check
SIM and microSD installation scheme in combined tray
The extracted tray is a plastic frame with two recesses of different sizes. This is the most important point of the instruction, since this is where users most often make mistakes. One place is for nano-SIM, the other for microSD, or both can accept nano-SIM depending on the configuration, but in Redmi 5A it is a hybrid slot type "2-in-1" (SIM+SIM or SIM+SD).
Look carefully at the tray. Usually, the smaller, angled slit is for nano-SIM. The larger rectangular rectangle is for the microSD card. The metal contacts on both cards should look downwards to the contacts inside the phone. If you look at the tray, you'll notice that one of the corners is cut off, which is the key to the correct orientation.
Cut corner by SIM-The map must match exactly the same ledge or bevel in the tray. You can't insert the card with the right side if the cut corners don't match, so don't put too much effort. The map must lie perfectly flat in the recess, without protruding over the edges or staggering.
| Position in the tray | Type of card | Orientation of contacts | Feature of the installation |
|---|---|---|---|
| Slot 1 (internal) | nano-SIM | Down. | The basic SIM card. |
| Slot 2 (external) | nano-SIM / microSD | Down. | Hybrid use |
| Holder | - | - | The map should snap. |
If you use two of them SIM-The second one is set to the remaining place, also in the contacts down. If you plan to expand the memory, the second slot is inserted microSD. Remember, you can't use two SIMs and a memory card at the same time in this model because of the design of the hybrid slot.
Installation of the tray back and primary activation
Once the cards are in place, you need to put the tray back into the phone case, and it's important to be careful: you only need to insert the tray in one correct position, and if you try to insert it upside down or upside down, it just won't go in until the end, and you risk breaking the plastic guides inside the case.
You need to feel that the tray is going easy, you need to squeeze it in carefully until it's a characteristic click, or until it's equal to the phone body. Don't use force; if the tray isn't going, take it out, flip it over and try again, checking your orientation.
Now turn on your smartphone. MIUI You should automatically detect a new one. SIM-The map will show a notification of registration on the network, and at the top of the display (at the status bar) will display the signal level icons. If there are two cards, you will see two of these icons with signatures. SIM 1 and SIM 2.
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The tray must enter the body smoothly and without resistance, and if you need a force, then you have a violation of orientation, and you need to turn the tray over.
β οΈ Warning: Do not insert the tray while the phone is on unless you are sure that the contacts are working properly. 5A It is safer to manipulate when the device is turned off in order to avoid short circuits.
Network setting and selection SIM-default-card
Once the phone is installed and turned on successfully, the system will suggest adjusting the parameters of card usage. In dual-symbol smartphones, this is a critical step, since it depends on which card will be used for traffic and where will go. SMS. Interface. MIUI Provides flexible tools to manage this process.
Go to the Settings menu and select a paragraph SIM-You can see a list of cards installed here, and you can give each one a name (e.g., "Work", "Home", "MTS", "Beeline") to keep it quiet. This is especially useful if you're using cards from different operators.
Next, you need to configure the default settings. In the "Default settings" section, select which one to choose. SIM-The card will be used for mobile Internet, voice calls and SMS-It is recommended that the card with the highest traffic packet be chosen for the Internet, and the card with the best pricing or the least coverage in your region for calls.
- π Assign a map with unlimited Internet for data transfer.
- π Select the main SIM for outgoing calls by default.
- π¬ Set your preferred card to send SMS.
- π·οΈ Give maps clear names for quick identification.
You can also activate the Always Ask feature on this menu if you want to select a card for each call manually, which is useful if you often call different contacts from different numbers and are afraid of making mistakes.
Possible problems and methods of solving them
Even with proper installation, there are times when the phone canβt see. SIM-This could be due to contact oxidation, software failure, or damage to the card itself. First of all, try rebooting the device, which solves 90% of login errors.
If the reboot didnβt help, remove the tray again and carefully inspect the metal contacts on the site. SIM-If you notice plaque or contamination, gently wipe them with a soft dry cloth or a swallow. Do not use alcohol or water under any circumstances, as the liquid may leak under the plastic base of the map.
Check if the card is sitting tight in the tray. SIM-These cards are a little thicker than the standard, and they may not reach the contacts inside the phone, so you can try to gently clean the edges of the plastic frame of the card with a stationery knife, making them a little thinner, but act extremely carefully.
What to do if your phone says no SIM-map"?
In rare cases, the problem is software. Make sure that the network settings do not include 4G/LTE only if your carrier in your area is not catching this standard well. Try switching the network type to Preferably 3G/2G and check if the signal appears.