Smartphone Xiaomi Redmi 9C NFC β popular model with wireless payment support, but even such a budget device installation SIM-This can be a question, especially if you're first encountering a hybrid slot that combines space for two nano-SIMs and a microSD card. In this article, we will analyze the step-by-step instructions with a photo, tell about the types of supported cards, warn about typical errors and give tips on setting up a mobile network after installing.
Many users mistakenly think that activation is a good way to do it. NFC You need to set up the SIM first, it's not. NFC redmi 9C works independently SIM-You don't need a card to pay for it or to transfer data, but without a SIM, you can't use the mobile Internet or call, and then you'll learn how to avoid damaging contacts, what tools you'll need, and what to do if the phone doesn't see the card after you install it.
If you have just bought a Redmi 9C NFC or are planning to change operators, this guide will help you get it right the first time, and we will also answer the frequent questions: can you use two SIMs at the same time, what card format is supported and how to not lose the guarantee when opening the slot.
Preparation for SIM-card installation: what you need
Before you insert the SIM into the Xiaomi Redmi 9C NFC, make sure you have everything you need.
- π± Redmi Smartphone 9C NFC (switched off!
- πͺ Paperclip or key to extract the tray (goes complete with the phone)
- π Nano-SIM card (or micro-SIM with adapter, but it is better to trim)
- π Good lighting (so as not to damage contacts)
If you don't already have a nano-SIM, you can get it for free from your operator's salon (MTS, Beeline, Tele2, Megaphone) or crop the old card yourself. Use a cropping template that's easy to find online. Don't cut the card with scissors without a template - it can damage the chip!
Note that the Redmi 9C NFC supports two nano-SIMs at the same time, but one of them shares a slot with a memory card.
- π± Two. SIM-cards (without microSD)
- πΎ One. SIM + memory card (up to 512 GB)
β οΈ Warning: If you use two SIMs, make sure they are from different carriers with good coverage, otherwise the phone can constantly switch between networks, which will lead to a quick battery drain.
Before removing the tray, be sure to turn off the phone, which will prevent short circuits and damage to the contacts. If the battery is removable (in this model it is not removable), this does not need to be done, but for the Redmi 9C NFC, the rule remains valid.
Where is the slot for SIM-maps 9C NFC
Unlike some Xiaomi models, where the slot is hidden under the back cover, in the Redmi 9C NFC, it is located on the left end of the case. To find it, flip the phone upwards and look at the left side - there you will see a small hole with a metal rim.
There are no labels or labels near the slot, so focus on:
- π Location: approximately in the middle of the left end
- π³ Shape: round hole diameter ~1 mm
- π¨ Color: Metal rim contrasts with plastic case
If you're not sure you've found the right place, compare with the photo below (or watch the video instruction at the end of the article).Don't confuse a SIM slot with a microphone or speaker - they're located at the bottom of the phone and have a mesh structure.
In some cases, the hole may be clogged with dust or dirt. If the paperclip doesn't come in, clean it gently with a toothpick or compressed air. Don't use needles or sharp objects - they can damage the internal mechanism.
Step-by-step instruction: how to insert SIM-map
Now, to the process itself, follow the instructions in strict order to avoid errors:
- Turn off the phone. Press the power button and select Turn off.
- Put the paperclip in the slot hole. Press until you click, the tray will extend 2-3 mm.
- Take the tray out carefully. Don't pull it by force if it's not going, check if the paperclip is fully in.
- Put it down. SIM-chip down, beveled angle to the corresponding groove (see photo).
- Put the tray back in. It should enter without effort. If not, check if the card is installed correctly.
- Turn on the phone. Wait for the download and check for the network.
If you set two SIM-Maps, place them in order:
- π± Slot 1 (top): main SIM (supportive 4G)
- π± Slot 2 (bottom): second SIM microSD
Make sure the phone's off.|Check the format of the map (nano-SIM)|The paperclip enters the hole without effort|The tray is moving smoothly, without jamming|The map lies chip down and beveled angle to groove-->
After turning on the phone, it may take 1-2 minutes for the network to work. If after 5 minutes the signal is not available, restart the device or check the correct installation of the card.
β οΈ Attention: If you feel resistance or hear a grin, stop immediately when you remove the tray, this may mean that the paperclip has bent or the tray has been deformed. In this case, contact the service center - self-attempts to correct the situation can lead to failure.
What are they? SIM-Cards supported by Redmi 9C NFC
Xiaomi Redmi 9C NFC works with nano-SIM (4FF) cards, the smallest standard used in modern smartphones, and if you have a different card format, it needs to be trimmed or replaced in the carrier cabin.
Here is the format compatibility table:
| SIM format | Support | Notes |
|---|---|---|
| Nano-SIM (4FF) | β Yes. | Standard size for slots |
| Micro-SIM (3FF) | β No. | Requires pruning or adapter |
| Mini-SIM (2FF) | β No. | Not suitable without pruning |
| eSIM | β No. | Redmi 9C NFC does not support virtual SIM |
If you decide to trim the micro-SIM to nano-format, use a special template or scissors with straight blades. The main thing is not to damage the chip or trim too much plastic. The best option is to get a new nano-SIM from the operator (usually free when replacing).
Also, pay attention to the support of networks:
- πΆ 4G LTE: It is supported in both slots, but only one. SIM may work in 4G simultaneously.
- π 3G/2G: supported in all modes.
- π VoLTE: Depends on operator (configured in Settings) β SIM-maps and mobile networks).
π‘
If you travel frequently, install the best-coated SIM slot (such as MTS or Beeline) and the local operator in the second, so the phone automatically switches to a more stable network.
Frequent Mistakes and How to Avoid Them
Even with the seemingly simple process, many users make mistakes that cause network loss, card or phone damage, and here are the most common problems and solutions.
- π« The phone can't see. SIM-card: Check if the card is installed correctly (chip down). Reboot the phone. Try another one. SIM β It's probably a problem in the map. Update the phone software (Settings) β The phone. β Updating the system).
- π The tray is not retractable: Make sure the paperclip goes to the end. Try using another object (like an unbended stationery clip). If the tray is jammed, don't force it, contact the service.
- π΅ No network after installation: Check if activated SIM Make sure the phone is not in airplane mode (Settings) β Connections β Manually select the operator in Settings β SIM-maps and mobile networks β Choice of network.
Another common problem is that contacts are damaged by improper installation, so if you notice that your phone has stopped seeing the card after several attempts to insert, check the tray for bent contacts, in which case only a replacement slot at the service center will help.
β οΈ Note: If you use a microSD card with you SIM, Make sure it is formatted in format. FAT32 Or exFAT. Some cards with a file system. NTFS They may not be recognized by the phone.
If after all the manipulations, the network did not appear, check whether the power saving function blocks access to the mobile network. β Battery and productivity β Power saving mode and disable restrictions for SIM-map.
Setting up a mobile network after installing SIM
After successful installation SIM-The card is left to set up the mobile network, and in most cases, the phone will automatically pick up the settings, but sometimes you need to manually set up the settings.
Here's what we need to do:
- Activate Mobile Data: Go to Settings β SIM-maps and mobile networks. Choose yours. SIM-Turn on the mobile data switch.
- Set up an APN: In the same menu, select Access Points (APNs). Click Add and enter your operator's settings (you can find them on the official website). Save and select a new APN.
Select network mode:
- B Settings β SIM-maps and mobile networks β Preferred type of network.
- For better speed, choose 4G (preferably).
If you use two of them SIM-Maps, you can set priorities:
- π Calls: Choose which one SIM will be used by default in the settings β SIM-maps and mobile networks β Calls.
- π Mobile data: only one SIM It can transmit data. Select the main one in Settings. β SIM-maps and mobile networks β Mobile data.
- π¬ SMS: tune in SIM for messages in Settings β SIM-maps and mobile networks β Communications.
For convenience, names can be assigned SIM-It's done on the same menu. SIM-Maps and mobile networks β click on the desired card and select Name SIM-map.
π‘
If the internet is slow after setting up your mobile network, try manually selecting 4G in the settings. Sometimes the automatic mode connects to overloaded 3G base stations.
What to do if the slot for SIM-card breaks
If after unsuccessful attempts the tray stopped moving or the phone does not see SIM-The card, maybe the slot is damaged:
- π§ Check the tray: Light a flashlight into the slot - there may be a piece of plastic or dust stuck there. Try to gently tuck the tray with a plastic card (not a metal one!).
- π± Diagnostics of software problems: Reset network settings: Settings β System system β Resetting settings β Reset network settings. Update your phone firmware to the latest version.
- π οΈ If the tray is bent or contacts are damaged, self-repair can aggravate the problem.In official Xiaomi services, the slot will be replaced by a warranty (if the damage is not due to your fault).
The cost of replacing the slot in informal services is usually 500-1500 rubles, depending on the region. If the phone is warranty, do not think to disassemble it yourself - this will void warranty obligations.
If the slot works, but the phone canβt see SIM-The problem may be the firmware. Try resetting your phone to factory settings. β System system β Resetting settings β Erase all data), but back up important data first.