How to insert the second SIM in Xiaomi Redmi Note: hybrid slot and nuances

Introduction: Why the second SIM in Redmi Note raises questions

Smartphones Xiaomi Redmi Note has long gained popularity due to the ratio of price and functionality, but many users face confusion when trying to install a second one. SIM-The thing is, most of the models in this lineup have a hybrid slot that combines the placement of a second SIM and a microSD card, which means you have to choose between two SIMs or one SIM. + storage.

In this article, we will look at how the hybrid slot works in different generations of the Redmi Note (from Note 4 to Note 13), what tools will be needed for installation, and how to avoid typical errors such as damage to contacts or incorrect operator recognition. We will pay special attention to models with support 5G, where the location of the slots may differ.

If you’ve never opened a SIM card tray before or are afraid of breaking the mechanism, don’t worry. We’ll detail each step, including the unique features of the tray mounting in the Redmi Note 10 Pro and later, where the manufacturer has changed the design to protect against dust and moisture.

Which Redmi Note models support two SIMs?

Before you try to insert a second SIM, it is important to make sure that your Xiaomi Redmi Note model supports this feature at all. Almost all devices in the lineup, starting with the Redmi Note 3, are equipped with two slots for the first time. SIM-maps, but there are nuances:

• 📱 Redmi Note 3/4/5/6/7/8/9: hybrid (SIM2 + MicroSD, the main slot, only SIM1.
• 📱 Redmi Note 10/11/12/13: Hybrid slot, but with improved dust protection (IP53).
• 📱 Redmi Note 10 Pro/11 Pro/12 Pro: separate slots for two sims + MicroSD (without hybrid).
• ⚠️ Exception: Redmi Note 5A Prime and some regional versions may have only one slot SIM.

To know exactly what your device is, check the specifications on Xiaomi’s official website or look at the SIM card tray: if there are three notches (two for SIM and one for MicroSD), then you have a non-hybrid model. If two notches are a hybrid.

What you will need to install the second SIM

For successful installation of the second SIM-Maps in Xiaomi Redmi Note prepare the following tools and accessories:

• 🔧 Paperclip or special key to extract the tray (goes complete with a smartphone).
• 📶 Nano-SIM card (all modern Redmi Notes support only this format).
• 🔍 Lighting (if the slot is poorly lit).
• 🧴 Alcohol wipes (to clean contacts if the SIM is not recognized).

Importantly, if you have a hybrid slot and you want to use two SIMs, you have to give up the memory card. The reverse is, if you need a MicroSD, the second SIM won't work. In Redmi Note 10 Pro and later, this restriction is removed, there are three separate slots.

Step-by-step: how to insert a second sim

Now, to the process itself, follow the instructions carefully so that you don't damage the tray or the contacts.

1. Turn off your smartphone. This is a must, as hot SIM card replacement can cause the modem to malfunction.
2. Find a SIM card tray, which is usually on the left or right side (Redmi Note 12 is on the right). In some models (Redmi Note 8 Pro, for example), the tray can be on the top.
3. Remove the tray. Put the paper clip in a small hole next to the slot and press until you click. The tray will move out automatically - don't pull it by force!
4. Place the SIMs. Focus on the diagram engraved on the tray: 📱 SIM1 — The main sim (always working). 📱 SIM2/MicroSD — Hybrid Slots (Select One Selected).

Put the tray back in. Make sure it's up straight and straight. In IP53-protected models (like the Redmi Note 11S), it may take a little more effort.

Turn on your phone. Wait for SIM card recognition (it can take up to 2 minutes).

If the second SIM is not identified, try:

• 🔄 Reboot the phone.
• 🧹 Clean the contacts of the SIM and slot with alcohol.
• 🔧 Check if the SIM is inserted correctly (the chip must be turned downwards).

SIM card layout schemes in popular models

The design of the tray may vary depending on the model, and the following are the diagrams for the most common devices:

Note: In 5G-enabled models (e.g. Redmi Note 11T), the second SIM can only work in 4G mode if the main SIM uses a fifth-generation network. This is a hardware limitation and cannot be circumvented software.

💡

If you travel frequently, consider using eSIM. Some Redmi Note models (like the Note 12 Pro+) support a virtual SIM, allowing you to use two physical + one electronic.

Frequent Mistakes and How to Avoid Them

Even experienced users sometimes make mistakes when installing a second SIM, and here are the most common ones and ways to prevent them:

⚠️ Warning: Never insert the tray back if the SIM protrudes beyond its edges.This can lead to jamming of the mechanism and damage to the motherboard.

• 🚫 Wrong format SIM. All Redmi Notes after 2018 only support Nano-SIM. If you have a Micro-SIM or Mini-SIM, it needs to be trimmed or replaced in the cabin of the operator.
• 🔄 In hybrid models, the second SIM must be in position. SIM2, It's not a microSD, or it won't see it.
• 📶 If the SIM is inserted correctly but the network is not catching, check if it is activated by the operator. APN.
• 🔋 Removing the tray when the phone is on, which can damage the modem. Always turn off the device before manipulating the SIMs.

Another common problem is operator conflict: If both SIMs are from the same provider (like both from MTS), there may be login errors, in which case you can try using different carrier SIMs or contact support.

💡

In the Redmi Note 12 and later, the SIM card tray has an additional rubber pad to protect against moisture.

Set up the second SIM in MIUI

Once you physically install the SIM, you have to set it up properly in the system. Here's what you can do in MIUI:

1. Go to Settings. → SIM-maps and mobile networks.
2. Select Control. SIM-map.
3. Assign each SIMKA a unique name (e.g., "Worker" and "Personal") for convenience.
4. In the Mobile Internet section, select which SIM will be used for data transfer by default.
5. In Call Settings, set a priority SIM for outgoing calls.

MIUI 14 and later introduced the "Dual 4G" feature, which allows both SIMs to simultaneously work on fourth-generation networks (previously the second SIM automatically switched to 2G).

1. Go to Settings. → SIM-maps and mobile networks → Additionally.
2. Enable the option to Enable dual VoLTE (if available for your model).

If this option is not available, then your device does not support this feature at the hardware level.

FAQ: Answers to popular questions