Owners of budget smartphones from Xiaomi often face the need to replace SIM-cards, whether it's switching to another operator or setting up a new tariff plan.Redmi model 7A, Despite its availability and reliability, it has some design features that can be confusing to the inexperienced user. The card tray here is combined, and the extraction mechanism requires care so as not to damage the fragile elements of the case.
Many people try to pick a hole at random, which is a mistake that can cause sensors to break or damage internal electronics, and the right approach involves using a special tool and a clear understanding of the location of components. In this article, we will discuss in detail the process of retrieving a memory card and SIM-module, eliminating the risk of mechanical damage to your device.
Properly installing and retrieving cards is a basic skill that prolongs the life of the contact group and the slot itself. Wrong actions often cause the phone to stop seeing the network or memory card, so it is important to follow the sequence of actions and use only the tools designed for this, which will be discussed later.
Preparation for extraction SIM-maps: security tools and measures
Before you start to physically affect the body of the smartphone, you need to ensure safe working conditions. Shutting down the device is a critical step, because the extraction of the device is a critical step. SIM-Hot card can cause a software failure in the communication module or, in rare cases, a short circuit of contacts. This is not just a recommendation, but a technical requirement for maintaining the integrity of data on the map.
The second important aspect is the choice of tool. The Redmi 7A always comes with a special metal clip designed for this purpose, which has the optimal thickness and sharpening to activate the spring mechanism of the tray without getting stuck inside the hole.
- 🔧 Special paper clip from the supply kit or thin sewing needle (use with caution).
- 🧼 Soft fabric or microfiber to wipe the card and tray contacts.
- 💡 A source of good lighting to clearly see the hole under the tray.
If the original paper clip is lost, you can use a thin paper clip, straightening one of its ends. However, you should avoid using thick pins or sewers, as they can damage the latch mechanism inside the case. The diameter of the hole for extracting the tray in Redmi 7A is approximately 1.2 mm, so the tool should be thinner than this value.
Also, keep your hands clean and your work surface, and dust and small debris that gets inside the slot when you open can disrupt contact between your card and your phone, and wipe your smartphone body before you start manipulating it to prevent dirt from getting inside the device.
Finding the tray and determining its type in Redmi 7A
Unlike many modern models, where trays can be arranged differently, Xiaomi Redmi 7A slot SIM-The card and memory card are on the top end of the device, and it's a classic budget location that keeps the side faces tight, and it's elongated, and it has a small hole on one side.
The tray design in this model is combined: it is designed to install two nano-SIM cards or one nano-SIM and one microSD memory card. It is important to correctly determine which card is installed in the recess so as not to damage the contacts. Usually, the plastic tray itself has a schematic image that tells you the correct orientation.
So if you look at the end of the phone carefully, you'll see an elongated element that's the same color as the body, with a tiny hole next to it, and that's where you're going to push the tool, and don't confuse it with the noise-cancellation microphone hole, which can also be on the top end, but has a round grid inside.
How to distinguish a tray from a microphone?
Step-by-step process of tray extraction
The extraction process itself requires minimal effort, but the right technique: Take a tool (clip) and place it perpendicular to the plane of the end of the smartphone. Put the tip of the paperclip into the hole on the tray. It is important to hold the phone tightly so that it does not slip out at the moment of pressure.
Press the paperclip with moderate force. You should feel a slight click or spring resistance, after which the tray will push out a few millimeters. You do not need to push with all the force: if the tray does not come out, check if you hit the hole correctly. Excessive force can break the inner lever.
☑️ Tray extraction algorithm
Once the tray has emerged from the case, gently tuck it with your nails and remove it completely. Don't pull sharply so as not to damage the contacts or the plastic frame itself. Now you can see the card indentations. If the tray is stuck, don't use pliers or other rough tools.
⚠️ Attention: If the tray is not removed after pressing the paper clip, do not use excessive force. It may be jammed, or you are pressing in the wrong hole.
Specificity of the combined slot: SIM and MicroSD
Redmi's device 7A It is equipped with a hybrid slot, which means that you can install either two or more SIM-card SIM-This is an important limitation that you should keep in mind: you can't use two SIMs and a memory card at the same time. The tray design is two places, but they're functionally connected.
When you extract it, you'll notice that the tray has two distinct pads: one is designed exclusively for nano-SIM, and the other can accept either a second nano-SIM or a microSD card. The contacts on the tray are arranged to match the form factor of the inserted element.
| Position in the tray | Type of card | Features of installation |
|---|---|---|
| Slot 1 (internal) | nano-SIM | The main slot for the SIM card |
| Slot 2 (external) | nano-SIM / microSD | Hybrid slot, the choice of one type |
| Contacts | Gold. | Must look down (on the paper clip) |
| Fixation | Tight. | The map shouldn't hang around. |
If you plan to use a memory card, you will have to remove one of the SIM-This is standard practice for budget models, where saving space inside the case is a priority.
What to do if the tray is stuck or broken
A situation where the tray gets stuck inside the housing is infrequent, but it is possible due to dust, deformation of the frame itself, or the use of the wrong tool. If a standard press with a clip does not work, try swaying the tool slightly from side to side, staying inside the hole to find the correct position of the latch.
Sometimes it helps to warm up the top of the phone (such as a hair dryer at a minimum temperature for 10-15 seconds), which can expand the plastic and release the jammed mechanism.
If the tray is still removed, but the plastic frame remains inside or breaks, do not try to extract the remains with your fingers or tweezers without magnifying.In this case, it is better to contact the service center, as there is a risk of pushing the wreckage deeper to the motherboard.
⚠️ Warning: Never use glue to stick a paper clip to the tray! glue can leak inside the mechanism and lock the phone firmly, making repairs economically uneconomical.
If the plastic holder itself breaks, it can be replaced. There are universal trays for Xiaomi on sale, but it is better to look for the original part for the 7A model, since the geometry of the casings of different models is different.
Proper installation SIM-card back to phone
Once you've taken out the tray and replaced the map if necessary, it's important to properly set it back. SIM-cards: it must match the bevel on the plastic frame of the tray. The gold contacts of the card should always be directed down to the paperclip (or to the bottom of the tray, if viewed from the side).
Make sure the card sits tightly in the recess and doesn't protrude over the edges of the tray. If the card protrudes, if you push the tray back into the phone, it can damage or damage the contacts inside the smartphone. Put the tray into the phone with the same side that squirted it.
Press the tray smoothly, without skewing. If you feel strong resistance, stop and check orientation. A properly inserted tray enters easily and becomes flush with the body, leaving no gaps. Once turned on, the phone must determine the network and display the signal level.
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Before installation SIM-wipe its gold contacts with a stripe or dry cloth. Contact oxidation is a common cause of network search problems.
If the phone is turned on, it says no. SIM-Try to remove and insert the tray again, making sure the contacts are clean. Sometimes it takes several attempts to make the map "sit" correctly.
Frequent Mistakes and How to Avoid Them
One of the most common mistakes is trying to insert SIM-Modern smartphones have foolproofing, but in older or budget models, this can lead to contact closure. Always check the notch position on the map with the drawing on the tray.
Another mistake is to use needles that are too thick, which leads to widening of the hole in the body, which causes the tray to stop fixing and can fall out on its own when shaking. If the hole is already stretched, use a thinner tool or contact a master to replace the socket.
- ❌ Inserting the card "hot" without turning off the phone.
- ❌ Use of force when tray is stuck.
- ❌ Ignoring dust and dirt in the slot.
- ❌ Installation of a card with damaged contacts.
Careful attitude to connectors and ports is the key to the long service of the smartphone. Regular check of the tray and cleaning from dust will help to avoid sudden problems with communication at the most inopportune time.
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The rule is that accuracy and the right tool are more important than strength, and one wrong move can cost the entire phone to be repaired.