Why it is important to establish correctly SIM-map
Xiaomi Redmi smartphones remain among the most popular devices on the market due to the price-quality ratio, but even a simple process like installing them. SIM-If you install a card, it can be difficult for a beginner. If you install it incorrectly, it can cause a network to be missing, contacts to be damaged, or even a tray to break. For example, the Redmi Note 12 and Redmi 10 models use hybrid slots where the second slot can work either as a second slot or as a second slot. SIM, MicroSD card β and itβs easy to make a mistake.
In this article, weβll take a look at not only the basic instructions, but also the nuances for different Redmi generations, from the budget Redmi A1 to the flagship Redmi K60. Youβll learn how to avoid typical errors (such as installing nano-SIM in a micro-SIM slot), what tools youβll need, and what to do if your phone doesnβt see the card after installation, and a unique life hack to retrieve the tray without a clip if itβs not at hand.
What are they? SIM-The cards support Xiaomi Redmi smartphones
Most modern Redmi models (starting in 2018) use the nano-SIM format (12.3 Γ 8.8 mm).However, older devices (such as the Redmi 4X or Redmi Note 4) could use micro-SIM (15 Γ 12 mm) or even combined slots.
- π± Previous articleSmartphones until 2017 often required micro-SIM.
- π Marking on the tray: it usually shows a supported format (e.g., "Nano") SIM + Nano SIM/microSD").
- π Set when buying: in the box with the new Redmi is always a paper clip to extract the tray.
If you're old. SIM-A large-format card can be cut to nano-SIM with a special stapler (sold in the salons) or with template scissors, but be careful: the wrong cropping will damage the chip, and the card will have to be replaced.
Preparation for installation: what will be needed
Before you start, make sure you have everything you need:
Paperclip (or pin) to remove the tray
SIM-map (nano/micro)
Clean dry surface for work
Lantern (if lighting is weak)
Protective case removed from phone-->
Pay special attention to the paperclip: the Xiaomi comes with a special metal clip with a curved end, if it's not there, any thin pin or even an unbended stationery clip will do. Don't use needles or toothpicks, they can break inside the hole.
β οΈ Note: If you recently purchased a smartphone, do not rush to insert SIM-First, turn on the device and check if the warranty is activated in the Settings menu. β The phone. β Status: In some regions (e.g. China), the first activation without the first activation is required to activate the warranty. SIM.
Step-by-step instruction: how to insert SIM-map
The installation process is the same for most models, but there are nuances for hybrid slots.
- Turn off your phone (optional, but recommended for safety).
- Find a slot for SIM-maps: In most Redmis, it is located on the left end (for example, Redmi Note 11, K50) The slot can be on the right end. In older models (for example, Redmi). 3S) β top-end.
- Remove the tray: Insert the paperclip into a small hole next to the slot and press before clicking. The tray will extend 1-2 mm - gently pull it with your fingers.
Install. SIM-map
- Put the card in the tray chip down, combining with the notch.
- For hybrid slots: If you need a microSD, a second SIM wonβt be inserted (and vice versa).
- Put the tray back in before you click. Make sure it sits flat, and the skews will cause the net to be out.
- Turn on your phone and wait for the network to appear (it can take up to 2 minutes).
What to do if the tray is not removed?
After installation, check the network status in Settings β SIM-If there's an exclamation point next to the operator's name, it means the card is not activated or installed incorrectly.
Frequent Mistakes and How to Avoid Them
Even experienced users sometimes make mistakes when installing SIM-Here are the most common problems and their solutions:
| Mistake. | Reason. | Decision |
|---|---|---|
| The phone can't see. SIM-map | The card is installed with a chip up or not fully inserted | Turn the card over and check that the tray has clicked. |
| No network after installation | SIM-The card is not activated by the operator | Call the operator or check the status in your personal account |
| The tray doesn't fit back in. | SIM-card or microSD interfere (e.g., in the wrong size) | Check the correct installation of all the elements |
| Phone's asking. PUK-code | Three times incorrectly entered PIN-code | Find a PUK on a plastic SIM or ask the operator |
| The second SIM is not working. | Hybrid slot: instead of the second SIM, a microSD is installed | Select priority in Settings β SIM-map |
β οΈ Attention: If after installation SIM-The phone started to overheat or discharge quickly, most likely, the slot contacts were damaged. In this case, do not re-extract the card again - contact the service.
Features of hybrid slots in Xiaomi Redmi
Many Redmi models (e.g. Redmi Note 10 Pro, Redmi) 9T) equipped with hybrid slots, where the second slot combines functions for the second SIM-microSD card and memory card:
- π You can't use the second one at the same time. SIM And microSD is just one thing.
- π± Slot priority is configured in Settings β SIM-maps and mobile networks β Default for calls.
- πΎ MicroSD format: cards up to 1TB are supported (but up to 512GB is optimal for stable operation).
If you travel frequently and use two SIM-You'll have to sacrifice a memory card, and the alternative is cloud storage (Mi Cloud, Google Drive) or OTG-In Redmi K-series models (e.g. flash drives, K60) Sometimes there are three slots: two under SIM and one under microSD - check this out when buying.
π‘
If you change often SIM-card (for example, on trips), buy an adapter for nano-SIM in micro-SIM. It will allow you to use one card in different devices without trimming.
What to do if SIM-The card does not work after installation
If the phone can't see SIM-map or not catching the network, act on the following algorithm:
- Restart your phone β sometimes the system doesnβt recognize the card right away.
- Check the tray: Remove and insert the card again. Blow the dust slot (for example, with a can of compressed air).
- Update the operator settings: Go to Settings β SIM-maps and mobile networks β [Yours. SIM] β Update profile.
Reset the network settings
- In Settings β System β Settings Reset β Resetting Wi-Fi, mobile network and Bluetooth settings.
- Check it out. SIM-card in another phone β if it does not work, the operator has a problem.