Xiaomi Redmi Note 9 remains a popular choice due to its price and functionality balance, but even experienced users sometimes have questions about basic operations. SIM-At first glance, the procedure is simple, but there are nuances: hybrid slot, support for two SIM cards, the choice of nano-SIM format.
In this article, we will discuss the step-by-step installation process. SIM-The Redmi Note 9 cards, including tool preparation, choice of the right card format and solution of typical problems, and the hybrid slot, which is how to keep the memory expansion possible if you use two SIM cards, will also provide answers to common questions: What to do if your phone canβt see SIM, activate 4G Why the network might be missing.
If you have just purchased the Xiaomi Redmi Note 9 or are planning to change carrier, this guide will help to avoid common mistakes. Even if you used other Xiaomi smartphones before, this model has features β for example, the slot is located on the left side, not on the right side, as in the newer devices of the brand.
Preparation for SIM-card installation: what you need
Before you start installing, make sure you have everything you need. The Redmi Note 9 will require:
- π± Nano-SIM card (or two if you plan to use two SIM cards). Redmi Note 9 supports only this format - Micro-SIM or standard. SIM won't fit.
- π§ A paper clip or a tool to extract the tray, and you've got a paper clip with the phone, but any thin metal wire will do.
- πΆ Active rate with a mobile operator. SIM-The card is new and may need to be activated (usually automatically when you first connect to the network).
If you donβt already have a nano-SIM, you can get it in a number of ways:
- π¦ In the cabin of the operator - free of charge will replace the old card with a new format (you will have to show a passport).
- π οΈ Cutting yourself is risky, but possible with a special template.In Redmi Note 9, an incorrectly cropped card can get stuck in the slot or damage contacts.
- π¦ Order online β many operators send nano-SIM by mail (for example, Tele2 or MTS).
Also check if the phone has a microSD card. The Redmi Note 9 uses a hybrid slot, so you can insert either two nano-SIMs or one nano-SIM + microSD at the same time. If you need both SIMs, you have to sacrifice the expansion of memory.
Where is the slot for SIM-Maps in Redmi Note 9
Unlike many modern smartphones, where the slot is located on the right side, in the Xiaomi Redmi Note 9 it is on the left end of the device. This is important to consider, so as not to confuse it with volume buttons or a charging connector.
The outermost slot is a small hole with a metal rim. There are no signs or signs nearby, so focus on:
- π Left side of the phone (if you hold the screen to yourself).
- π At the camera level, approximately in the middle of the height of the body.
- π« Not to be confused with the microphone, it is located closer to the bottom edge.
If you're not sure you found the right hole, flash a flashlight -- you should see the metal tray mechanism inside. Don't try to insert the paper clip into other holes (like the headphone jack or USB-C), it can damage the phone.
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If the slot seems too tight, don't put too much effort into it. You may have hit the wrong hole or the tray has already been partially pushed out. Check the location again.
Step-by-step instruction: how to insert SIM-map
Now, let's get to the process. Follow the instructions carefully to avoid mistakes.
- Turn off the phone.This is not necessary, but it is recommended to avoid possible failures during initialization. SIM-Press and hold the power button, then select Turn off.
- Put the paperclip in the slot hole. Push it with effort but no fanaticism, a slight click should be heard, and the tray will start to move out. If the tray does not come out, check if it has jammed (sometimes this is due to dust ingress).
- Take out the tray completely. Pull it carefully on you, it must come out without resistance. Don't pull around the corner so as not to bend.
- Put it down. SIM-Notice the notch on the map, it should match the shape of the nest. For Redmi Note 9: π± Slot 1 (closer to the edge of the tray) - the main SIM (supportive 4G). π± Slot 2 - second SIM MicroSD (in hybrid mode).
Put the tray back in. Make sure the card is not protruding or skewed. Press the tray until you click, it should stand in place smoothly, without backlash.
Turn on the phone and wait for the initialization of the network. SIM-new card, may require entry PUK-code (if established) PIN).
If the network does not appear after turning on the phone, check:
- π Is the card inserted correctly (turn the tray over and see if it has fallen out).
- πΆ Activated? SIM Operator (sometimes requires time or call in support).
- βοΈ Network settings: go to Settings β SIM-Maps and mobile networks and select the desired SIM call-to-internet.
βοΈ Check before turning on the phone
Hybrid Slot: How to Use Two SIMs or SIM+MicroSD
One of the features of the Xiaomi Redmi Note 9 is a hybrid slot that allows you to choose between:
- π±π± Two nano-SIMs (ideal for those who use two numbers).
- π±πΎ One nano-SIM + MicroSD (if you need to expand your memory).
Unfortunately, you can't use two SIMs and a memory card at the same time, and if you want both numbers and additional storage, you'll have to choose one.
| Configuration | Pluses | Cons |
|---|---|---|
| Two nano-SIMs | Separation of personal and business calls: the ability to use the rates of different operators (for example, one for calls, the other for the Internet). | You can't expand memory. One of the slots may not support 4G (depends on the firmware). |
| One nano-SIM + microSD | Additional space for photos, videos and apps, and you can use cards up to 512GB. | You can't use the second number. If you reset the memory card, you'll have to reconfigure the applications. |
If you have chosen the option with two SIM-with maps, keep in mind that:
- πΆ The main slot (Slot) 1) usually 4G, And the second one. 2) can only work in 2G/3G (It depends on the region and firmware. Check the settings in Settings β SIM-maps and mobile networks β Preferred type of network.
- π Switching between SIM for calls/internets is done manually or by rules (e.g., "C"IM 1 for data, SIM 2 for calls").
How to check which slot supports 4G?
Frequent Mistakes and How to Avoid Them
Even with the seemingly simple procedure, users often encounter problems, and here are the most common mistakes and ways to solve them:
β οΈ Warning: If the tray is not inserted to the end, do not force it. This can bend the contacts inside the phone. SIM-map and dust does not interfere with it.
Problem 1: The phone can't see SIM-map
- π Restart your phone β sometimes the system doesnβt recognize a new card right away.
- π§Ή Clear the contacts. SIM-cards and slots with dry soft fabric (do not use alcohol or wet wipes!).
- πΆ Check the network coverage β it may not be the phone that is the problem, but the operator (especially if you are not the phone). SIM new).
- βοΈ Reset network settings: Settings β System system β Resetting settings β Resetting mobile network settings.
Problem 2: SIM-card stuck in the slot
- π« Donβt try to pull it out with tweezers or a needle β youβll damage your contacts.
- π§ Use the second tray (if it is empty) - gently press the card from the back.
- π Contact the service center if the card fails.
Problem 3: The Internet is lost or slow
- π‘ Check Network Priority: Go to Settings β SIM-maps and mobile networks β Preferred network type and select 4G (preferably).
- π Switch to the other one. SIM (If you use two, you may have a problem with the operatorβs coverage.
- πΆ Update the settings APN manually (instructions are available on your operator's website).
If none of these methods helped, the problem could be the problem. SIM-card (for example, it is damaged) or in a hardware malfunction of the phone, in which case it is better to contact the Xiaomi service center or the operator for a replacement card.
Network settings after installation SIM-map
After successful installation SIM-So the maps are just to set up the phone to make the network work properly:
1. Choice. SIM-default-card
If you have two. SIM-The phone will ask which one to use for calls, SMS And the mobile Internet. You can do it:
- π Assign primary SIM for calls (for example, personal number).
- π Choose. SIM mobile internet (usually the one where the tariff is more favorable).
- π Set rules, for example, use SIM 1 for data, and SIM 2 for calls.
Settings are in Settings β SIM-maps and mobile networks β Choice SIM-default-card.
2. 4G setup (LTE)
To ensure maximum internet speed:
- Go to Settings. β SIM-maps and mobile networks β [Choose. SIM] β Preferred type of network.
- Choose 4G (preferably) or LTE.
- If 4G doesnβt catch, try 3G or Auto.
3. Access Point Configurement (APN)
Usually, the APN settings are set automatically, but if the internet is not working:
- Go to Settings. β SIM-maps and mobile networks β Access points (APN).
- Click Add and enter your operatorβs settings (they can be found on the official website).
- Save and select a new APN.
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If your 4G phone still works in 3G after setting up, check if your LTE tariff supports it. Some budget packages limit speeds to 3G.
Care advice SIM-card-and-slot
To avoid problems in the future, follow these guidelines:
- π§΄ Avoid getting moisture into the slot. If the phone is wet, don't insert it. SIM-map until it is completely dry.
- π§Ή Clean the slot regularly from dust and dirt. Use a dry brush or a compressed air balloon.
- π Don't take it out. SIM-card with the phone on β this can cause system failure or damage to contacts.
- π± Do not use damaged cards. SIM have scratches, chips or traces of oxidation, replace it.
If you change often SIM-Note: Unfortunately, the Redmi Note 9 does not support this technology, but in new Xiaomi models (such as Xiaomi 13 or Redmi Note 12), it is already available.
It is also important to remember that frequent shifts SIM-If you notice that the slot has become tight to open or close, it is better to contact the service for diagnosis.