How to insert two SIMs in Xiaomi Redmi: detailed instructions with photos and tips

Double. SIM-The map in Xiaomi Redmi smartphones is a convenient feature for those who share work and personal numbers or travel between countries. However, not all users know how to install two SIMs correctly, especially if we are talking about models with a hybrid slot, where the second slot is combined with a memory card connector. In this article, we will analyze the steps of how to insert two SIMs in the Redmi Note 12, Redmi 10, Redmi 10, Redmi. A2 and other popular models, as well as tell about pitfalls that you can encounter.

Many people mistakenly think that two SIM cards necessarily need a smartphone with a dedicated dual-SIM slot, but in fact even hybrid solutions allow you to use two nano-SIMs — the main thing is to know the nuances. 4G/5G, Network Priority settings and what to do if the phone doesn’t see one of the SIM cards after installing.

If you just bought a Xiaomi Redmi and want to make the most of the dual SIM card experience, this guide will help you avoid typical errors. And for owners of older models (such as Redmi 5 or Redmi 7), we will separately consider the features of their slots that differ from modern devices.

Which Xiaomi Redmi models support two SIMs?

The vast majority of Xiaomi Redmi smartphones are equipped with Dual support SIM (DSDS), But implementation may be different. Here are the key points:

✅ Modern models (2020–2026.):

• 📱 Hybrid slot (nano-SIM) + nano-SIM or nano-SIM + MicroSD): Redmi Note 11/12/13, Redmi 10/10A/10C, Redmi A1/A2, POCO X3/X4/X5.
• 📱 Dedicated Dual SIM (two nano-SIMs + MicroSD slot: rare, but found in some regional versions (e.g. Redmi) K50 for India).

❌ Old models (until 2019.):

• 📱 Micro-SIM + nano-SIM: Redmi 4/4A/4X, Redmi 5/5A.
• 📱 Only One Nano-SIM: Budget versions for some markets (e.g. Redmi Go).

To find out exactly the type of slot in your model, check the official specs on the Xiaomi website or look at the SIM card tray: if it has two separate slots for nano-SIM – you have a dedicated Dual. SIM, If one socket is combined with the MicroSD label, it is a hybrid.

What do you need to install two SIM cards?

Before you start, prepare the following things:

• ✂️ Two nano-SIMs (if you have regular ones) SIM Micro-SIMs, they must be trimmed or replaced in the cabin of the operator).
• 🔧 Paperclip or tool to extract the tray (goes complete with the phone).
• 📱 Charger (it is recommended to charge the phone at least 30% to avoid a sudden shutdown during setup).
• 🔍 Flashlight (will help to see connectors in low-light places).

If your Xiaomi Redmi has a hybrid slot, you'll have to choose between a second SIM card and a memory card. + MicroSD cannot be installed at the same time (except for rare models with three slots).

If you plan to use two SIM cards but need additional memory, consider:

• 🔄 Cloud storage (Google Drive, Mi Cloud).
• 💾 OTG-flash drive (connected through USB-C).
• 📁 Memory optimization (cache removal, file transfer to PC).

💡

If you travel frequently, buy a lot of-SIM (For example, from the operator Dreamsim or Goodline – it will replace both physical cards and free up a slot for MicroSD.

Step-by-step: how to insert two SIMs in Xiaomi Redmi

The process of installing SIM cards is the same for most models, but we will pay attention to the nuances of hybrid slots.

🔹 Step 1. Turn off the phone.

⚠️ Attention! SIM cards installed when the phone is on can damage the slot contacts. Always turn off the device before removing the tray.

🔹 Step 2. Remove the SIM card tray

• Find a small hole on the side of the phone (usually on the right or top).
• Insert the paperclip into the hole and press slightly until the tray is pushed out.
• Carefully remove the tray completely.

🔹 Step 3. Set up the SIM cards.

• Place the tray on a flat surface with contacts upwards.
• Place the first nano-SIM in the nest SIM1 (commonly marked).
• The second nano-SIM is placed in the nest. SIM2 or (for hybrid slots) instead of MicroSD.
• Make sure that the SIM cards are gold contacts down and fit tightly to the stops.

🔹 Step 4. Put the tray back in place.

• Carefully insert the tray back into the slot before clicking.
• Make sure he sits flat and doesn't perform.

🔹 Step 5: Turn on your phone and set up your SIM cards

• After switching on, wait until the phone identifies the network.
• Go to Settings. → SIM-maps and mobile networks.
• Set SIM card priority for calls, SMS and mobile Internet.

Setup two SIM cards in Xiaomi Redmi

Once the SIM cards are physically installed, they need to be configured correctly in the system.

📞 Priority of calls and SMS:

• 📞 Select which SIM card will be used by default for outbound calls (Settings) → SIM-map → Default call).
• 💬 Similarly, set up a SIM card for SMS (Settings → SIM-map → Default messages).

🌐 Mobile Internet:

• 📶 Include mobile data for the desired SIM card in Settings → SIM-map → Mobile data.
• 🔄 If one of the SIM cards fails to catch 4G, Check the network settings: Settings → SIM-map → [choose SIM] → Network type (recommended) 4G/3G/2G (motor-car)).

🔄 Switching between SIM cards:

• During the call, you can select a SIM card manually by clicking on the SIM icon in the dial interface.
• For SMS long tap on the send button select the desired SIM card.

⚡ Energy conservation:

• If one of the SIM cards is rarely used, turn off background data transfer for it in Settings. → SIM-map → [choose SIM] → Background data.

💡

If the phone doesn’t see one of the SIM cards, try restarting the device or clearing the cache in Settings. → Annexes → Systemic → SIM-manager.

Typical problems and their solutions

Even after installing the SIM cards correctly, it can be difficult.

🚫 The phone doesn't see one of the SIM cards:

• 🔄 Reboot the phone.
• 🔧 Check whether the SIM card sits tightly in the tray (sometimes it helps to bend the SIM card contacts a little).
• 📱 Update: Settings → The phone. → Updating the system.
• 🛠️ If the problem remains, perhaps the slot is damaged - contact the service center.

📶 Mobile Internet does not work on one of the SIM cards:

• 🔄 Make sure mobile data is enabled for the correct SIM card.
• 📶 Check it out. APN-settings: Settings → SIM-map → [SIM] → Access points (APN) (Add manually if necessary).
• 🔄 Switch the network type to Only 3G back 4G.

🔋 Fast battery discharge with two SIM cards:

• 🔋 Turn off background data for the second SIM card.
• 📡 Enable Charge Saving Mode in Battery Settings.
• 🔄 If the problem persists, try using SIM cards from different carriers (sometimes networks conflict).

📵 SIM card is defined, but no network:

• 🔄 Restart your phone in Safe Mode (hold the power button) → Safe regime).
• 🔧 Check if the SIM card is blocked by the operator (call from another phone to this number).
• 📡 The problem may be on the operator’s side – contact support.

⚠️ If after installing two SIM cards, the phone starts to overheat or brake very badly, one of the SIM cards may be faulty.

Can I use two SIMs and a memory card at the same time?

In most Xiaomi Redmi models with hybrid slots, the answer is no. However, there are a few workarounds:

🔄 Option 1. OTG-adapter + flash-drive:

• Buy it. USB-C OTG-adapter and plug in the flash drive.
• Cons: The flash drive will stick out of the phone, which is inconvenient for constant use.

💾 Option 2: Wireless storage:

• Use a Wi-Fi flash drive (like SanDisk Connect) or cloud.
• Plus: Does not take up a physical slot, minus: requires a connection to the network.

📱 Option 3: Replacement of the SIM card with eSIM (for supported models):

• Some Xiaomi Redmi (e.g. Redmi) K50) Support eSIM support.
• Get an eSIM from the operator, and leave the physical slot for the second SIM card. + MicroSD.

🔧 Option 4: Modification of the phone (not recommended!):

• Some service centers offer to refine the slot for simultaneous operation of two SIM cards and MicroSD.
• ⚠️ Risk: loss of warranty, damage to motherboard.

Tips for using two SIM cards in Xiaomi Redmi

To avoid problems and make the most of the two SIM cards, follow these guidelines:

📶 Network optimization:

• If one SIM card is used only for calls, turn off mobile Internet for it.
• For a better reception. 4G/5G Install a SIM card with a priority network in SIM1 (It usually has the best antenna).

🔋 Saving charge:

• In battery settings, turn off Network Search for a second SIM card if it is rarely used.
• Use the Savings mode at low battery level.

📵 Security:

• Do not store confidential data (passwords, codes) in SMS SIM card – they can be lost when changing the number.
• Set up the lock. SIM-map PIN-code (Settings) → Security → Lockdown SIM-map).

🔄 Usability:

• Assign SIM cards clear names (for example, "MTS Worker", "Tele2 Personal").
• Set up quick commands to switch between SIM cards (some firmware has gestures).

📱 Updates and firmware:

• Regularly update the software in new versions MIUI Correcting Dual Bugs SIM.
• If after the update, the network is missing, reset the network settings: → Memory. → Reset → Resetting network settings.

💡

If you travel frequently, set up roaming packages in advance. In some countries (e.g. Turkey, UAE) local SIM cards are cheaper than roaming from Russian operators.

FAQ: Frequent questions about two SIM cards in Xiaomi Redmi