Replacement SIM-The cards in Xiaomi Redmi smartphones seem to be a simple procedure, but in practice users face typical mistakes: from the wrong location of the chip in the tray to damage contacts during careless extraction. In this article, we will analyze not only the basic instructions, but also the nuances that the manufacturer is silent in the official manuals.
Feature of the Redmi line - a variety of designs SIM-For example, in the models of the Redmi Note 12 Pro+ redmi 10C Different fixation mechanisms are used, and in hybrid slots (SIM + microSD) easily confuses the sides of the installation, and we will show you how to avoid typical problems, keeping the network up and running without damaging the smartphone.
Important: If after replacement SIM-The phone can't see the network, and 80 percent of the time it's not the chip itself, it's the wrong installation or software failure. At the end of the article, you'll find a checklist to diagnose these situations.
Types of SIM-trays in Xiaomi Redmi smartphones: how to determine your own
Depending on the model, Xiaomi Redmi uses three types of trays for the SIM-map:
- π± A typical single slot is only one nano-SIM (found in budget models such as Redmi). A1 or Redmi 9A).
- π Double slot (Dual slot) SIM) β Two nano-SIMs without microSD support (e.g. Redmi Note 11 Pro).
- πΎ Hybrid slots β two nano-SIMs or one SIM + MicroSD (commonly available in Redmi Note 10 Pro, Redmi 12).
To find out the type of slot of your model, check:
- Official specifications on the Xiaomi website (SIM Card section).
- The inscriptions on the tray itself β if there is an SD symbol, it is a hybrid slot.
- Settings menu: Settings β SIM-If you have the memory option, the hybrid slot.
β οΈ Note: In hybrid slots, when installing a microSD, the second SIM-It's not a breakdown, it's a design feature to get the Dual back. SIM, retrieve the memory card.
Preparation for replacement: what to do before extraction SIM-map
Before you remove the tray, follow these steps to avoid data loss or crashes:
- Turn off mobile internet in settings (Settings) β SIM-maps and mobile networks β Data transfer: This will prevent interruption of downloads or updates.
- Save contacts to the cloud or memory card if they are linked to the SIM. Xiaomi has a default Mi Account, but older models can use it. SIM-memory.
- Turn off the phone (not necessarily, but recommended). Hot SIM replacement on the device on sometimes causes the communication module to crash.
π§ The tools you'll need:
- π Paperclip or key to extract the tray (goes complete with the phone).
- π Tweezers (if) SIM-The card is stuck or you need to carefully correct its position).
- π¦ Lantern - illuminates the slot in low light.
βοΈ Preparation for replacement SIM-map
β οΈ Note: If you are using eSIM (virtual) SIM-map in models of the Redmi type K60 Pro, no physical replacement required. To activate eSIM, go to Settings β SIM-maps and mobile networks β Add eSIM.
Step-by-step instructions: how to remove and insert SIM-map
Follow this algorithm to avoid damaging your contacts or tray:
- Find a slot for SIM-Maps: Most Redmi models have it on the left end (e.g. Redmi Note 12). 9T) β right-handed.
- Remove the tray: Put the paper clip in the hole next to the slot and press until you click. The tray will extend 2-3 mm - carefully pull it out with your fingers. What to do if the tray is stuck?If the tray does not come out after pressing the paper clip, do not apply force. Try: 1. Press harder (sometimes the mechanism "sticks"). 2. Use a thinner tool (for example, a needle). 3. Blow the dryer into the slot (if dust hits). If nothing helps, contact the service center, so as not to damage the connector.
- Install. SIM-Map: Put the nano-SIM in the tray chip down, matching the bevelled angle with the notch. SIM or microSD is installed on the opposite side (see diagram on the tray).
Put the tray back in.
Critical error: if inserted SIM-chip up, the phone won't see it, and re-extracting it can damage the contacts.
π‘
If the tray is tightly in, do not press harder - check if it is installed correctly SIM-Often users confuse the sides and insert the chip backwards".
Frequent problems after replacement SIM-maps and their solutions
If, after installing a new SIM-The phone does not catch the network, use this table for diagnosis:
| Problem. | Possible cause | Decision |
|---|---|---|
| The phone can't see. SIM-map | Incorrect installation of the chip | Reinstall the SIM, making sure the bevelled angle matches the notch in the tray |
| No network (only emergency calls) | Inactivated SIM or IMEI failure | Call the operator back for activation or restore the IMEI via *#06# |
| Switching between 3G/4G | Incorrect network settings | Set the mode manually: Settings β SIM-map β Preferred type of network β 4G |
| SIM-The map works, but there is no internet. | Not set up by APN | Reset APN settings: Settings β Mobile Network β Access Points (APN) β Reset |
π οΈ If nothing helps:
- π Restart your phone β sometimes the communication module βhangsβ after replacement SIM.
- π± Check it out. SIM-card on another phone to prevent it from malfunctioning.
- π§ Reset network settings: Settings β System system β Resetting settings β Resetting Wi-Fi, Mobile Network and Bluetooth.
π‘
If, after the replacement, SIM-card IMEI (This may indicate damage to the communication module, which requires repair at the service center.
Features of replacement SIM-Maps in popular Xiaomi Redmi models
Some Xiaomi Redmi models have unique nuances when replacing SIM-Let's look at the most common maps:
Redmi Note 12 Pro+/Pro/12S
These models use a reinforced metal tray, which is more difficult to remove with a paper clip.
- Use the original key from the set (it is thicker than the standard paper clip).
- Press strictly perpendicular to the body, otherwise the mechanism will not work.
Redmi 10C / 10A
Here, the tray is on the right end, not the left end, as in most models, and there is a bug in the Redmi 10C: after replacing the SIM, the phone may not see the network until it restarts.
Redmi K50/K60 Series
These flagships support 5G, but it requires:
- πΆ Install SIM-card in slot 1 (slot 2 only works in mode) 4G).
- π§ Turn on 5G in settings: Settings β SIM-maps and mobile networks β Preferred type of network β 5G.
β οΈ Attention: At Redmi K60 Ultra with simultaneous use of two SIM-speed-up 5G may be limited to 4G This is not a fault, but a feature of the Snapdragon 8 chipset.+ Gen 1.
How to transfer contacts and data from the old SIM-new-card
If you change SIM-card due to operator change or tariff update, it is important to keep contacts. Xiaomi Redmi has three ways to transfer:
- Using Mi Account (recommended): Open Contacts β Settings β Import / Export β Export to Mi Account. After installing a new SIM, log in to the same Xiaomi account β contacts are synced automatically.
- Google Account: Go to Settings β Accounts β Google β Contact Sync. Make sure the option is enabled β contacts are saved to the cloud.
Manual export to memory card
Contacts β Settings β Import / Export β Export to a memory card (VCF)The.vcf file can be copied to a PC or a new SIM via an adapter.
π Important: If the contact is only stored on SIM-Use an adapter to read the old one SIM on a PC or special applications type SIM Card Reader from Google Play.
π‘
Before perenosom contacts check if they are duplicated. Xiaomi Redmi often has "ghost" contacts due to synchronization with multiple accounts. To clear: Contacts β Settings β Combine duplicates.
Safety and Care: How to Prolong Life SIM-tray
Tray for SIM-The maps are one of the most vulnerable spots in Xiaomi Redmi:
- π« Do not use metal objects (needles, knives) to extract them β they scratch the mechanism.
- π§Ή Clean the slot from dust once every 6 months with compressed air or a soft brush.
- π§ Avoid moisture β if the phone is wet, dry the tray before installing it SIM.
- π Don't take it out. SIM-card with low battery charge (less than 10%) β this can cause the communication module to fail.
β οΈ Note: If after replacement SIM-The phone has started to overheat or discharge quickly, this may indicate damage to the antenna module. In such cases, a diagnosis is required in the service center - self-repair is fraught with loss of warranty.
π How to check the status of contacts:
- Take out the tray and inspect the gold contacts on SIM-card-and-slot.
- If they are stained, then clean them with a clean brush.
- If you see any damage (scrapes, chips) replace SIM-map or contact the service.