Xiaomi Redmi Note 7 remains one of the most popular smartphones in the budget segment even years after its release. Its reliability, performance and flexibility of settings attract users, but the question of how many smartphones are available is the number of the devices. SIM-The maps are still confusing. In this article, we'll look at how many cards you can find. SIM-The cards are supported by the model, how the hybrid slot works, what nuances are there when using two sims at the same time, and we will give practical tips for optimizing the network.
Redmi Note 7 does not support three SIM-cards like some flagships, but its hybrid slot allows you to combine two nano-SIMs or one SIM + This is a solution typical of the 2019 device, where manufacturers saved space inside the case, but there are important details that many people don't know about, such as the limits on two sims in mode. 4G Compatibility with operators from different countries.
This article will be useful not only for beginners, but also for experienced users who want to make the most of the communication capabilities of their Redmi Note 7. We will also answer frequent questions: can you put a microSD with two SIMs, how to set network priority, and what to do if the smartphone does not see the second SIM?
Technical specifications: how many SIM-Redmi Note 7 maps with documentation
According to Xiaomi’s official specifications, the Redmi Note 7 is equipped with a hybrid card slot that supports:
- 📱 Two nano-SIM cards (format) 4FF) At the same time, but with a limitation, one of them will work in the mode. 2G with an active Internet on the second.
- 💾 One nano-SIM + microSD (up to 256 GB) – in this case, the second SIM-The card won't physically fit.
This means that two people are used simultaneously. SIM-You can't have a card or a memory card, you have to choose between two SIMKS (with speed compromises) or one SIMK. + Important: the slot does not support micro-SIM or mini-SIM cards, only nano-SIM.
The table below compares the slot configurations with other models of the Redmi Note line:
| Model | Slot type | Max Max. SIM-map | Support for microSD support | 4G Limitations |
|---|---|---|---|---|
| Redmi Note 7 | Hybrid | 2 | Yes (instead of the 2nd SIM) | Only one SIM in 4G |
| Redmi Note 8 | Hybrid | 2 | Yes. | Only one SIM in 4G |
| Redmi Note 9 | Dedicated + Hybrid | 2 | Yes. | Both SIMs can be in 4G |
| Redmi Note 10 | Dedicated + Hybrid | 2 | Yes. | Both SIMs in 4G |
As you can see, the Redmi Note 7 The newer models are less flexible: Note 9/10 There is a separate microSD slot, which allows you to use two SIM-If you're critical to two SIMs in the same room, 4G, I'd like to consider upgrades.
Hybrid slots: how it works and what limitations are there
The hybrid slot in the Redmi Note 7 is a compromise solution that saves space in the case, but imposes limitations.
- Physical construction: the slot is combined and has two nests — SIM1 and SIM2/microSD. The second nest can receive either a second SIM-card or memory card, but not both at the same time.
- Logic of work: if you insert two SIM-maps, then: 📶 Both will be active for calls and SMS. 🌐 Only one person can use the mobile Internet 4G/LTE (The second will automatically switch to 2G/3G).
This limitation is hardware related: the Redmi Note 7 has one module installed. 4G LTE, which cannot simultaneously serve two SIM-This is typical of budget smartphones in 2018-2019.
Why is the second SIM switching to 2G?
The important point is that if you use two SIM-If you're on the first card, the second one might not be receiving calls during the data transfer (for example, when you download a file), because the communication module is busy. → SIM-maps and mobile networks.
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To avoid missed calls to the second SIM, activate the option "Incoming calls during data transfer" in the network settings, which allows you to temporarily interrupt the Internet to receive a call.
How to set up two SIM-maps: step-by-step instructions
If you decide to use two SIM-maps in Redmi Note 7, you need to configure them correctly to avoid communication problems:
- Installation of maps: 🛠️ Turn off your smartphone and remove the tray for SIM-cards with a paper clip (hole on the right). 📱 Put the first nano-SIM in the slot SIM1 (usually marked as the main). 📱 The second nano-SIM is installed in the slot. SIM2 (You can also use microSD at the same time!).
- Activation: Turn on your phone and wait for card recognition. Go to Settings → SIM-maps and mobile networks. Click on each one. SIM-Enable the card and turn it on if it is inactive.
Setting priorities
Select the main one SIM call-in|Designate SIM mobile-internet|Activate the “Allow” option 4G" fittingly SIM|Check your roaming settings (if necessary)-->
After activation, it is recommended to check the balance and signal on both SIM-If one of the cards is not identified, try it:
- 🔄 Reboot your smartphone.
- 📶 Manually select the operator in the network settings (Settings) → Mobile network → Network operators).
- 🛠️ Check if it is installed correctly SIM-card (sometimes the tray is not inserted until the end).
Travellers’ advice: if you use a local SIM-card abroad, set up data roaming only for it to avoid unexpected expenses on the main number.
Compatibility with operators: which SIM-The cards work better.
The Redmi Note 7 supports most communication standards, but the performance depends on the operator.
- 🌍 Frequency support: the smartphone works in ranges: 4G: B1/B3/B5/B7/B8/B20/B38/B40 (Suitable for MTS, Beeline, MegaFon, Tele2 Russia). 3G: B1/B2/B5/B8. 2G: B2/B3/B5/B8.
- 📡 Internet speed: maximum download speed – up to 600 Mbps (theoretically), but in practice depends on the coverage of the operator.
- 🔄 Switching between SIM: If one of the cards does not catch the network, the smartphone automatically switches to the second (if the option "Select the network" is activated").
In Russia and CIS countries, Redmi Note 7 shows stable work with the main operators, but there are nuances:
- 📶 MTS and Beeline usually provide better coverage 4G, There may be problems with VoLTE (voice through voice) 4G) second SIM.
- 📞 Megaphone and Tele2 Sometimes you need to manually adjust. APN work-in MMS.
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If you use SIM-maps of different operators, check the settings APN Incorrect parameters can lead to a lack of Internet or problems with the Internet. MMS.
To check compatibility with your operator:
- Ask the operator what 4G frequencies they use in your area.
- Compare them to the Redmi Note 7 specs (see table above).
- If the frequencies match but the connection is unstable, try resetting the network settings (Settings → System → Reset → Network Reset).
Frequent problems and their solutions
Even with the right setup with two SIM-Redmi Note 7 may have problems with cards. Let's look at the most common ones and how to fix them:
⚠️ Note: If after installation of the second SIM-The card stopped working first, check if the contact in the slot is bent.
| Problem. | Possible cause | Decision |
|---|---|---|
| Not defined by second SIM | Incorrect installation, damaged card, software failure | Reinstall the card, check in another device, reset network settings |
| There is no internet on one of the SIMs. | Not configured with APN, operator restriction, slot is occupied by microSD | Check APN settings, contact the operator, remove the microSD |
| Calls are reset when using the mobile Internet | Limiting the hybrid slot (only one SIM in 4G) | Disconnect mobile internet during calls or use Wi-Fi |
| Smartphone warms up when working two SIM | Increased load on the communication module | Disable background data transfer for one of the SIMs |
If none of the solutions worked, try:
- Update the firmware of the smartphone to the latest version (Settings → About the phone → System update).
- Reset all settings to factory (don’t forget to make a backup!).
- Contact the service center if the problem is hardware (for example, a damaged slot).
Important: Before resetting your settings, unplug your Mi Account if it is tied to your device to avoid being blocked after resetting.
Alternatives: How to Increase Connectivity
If you're missing two SIM-If you want to use microSD cards or you want to use them, consider alternative solutions:
- 📶 Wi-Fi Calling: many operators (for example, MTS and Beeline) support calls over Wi-Fi. SIM Internet, and make calls through the first Wi-Fi.
- 🔄 Call forwarding: set up forwarding from the second SIM to the first one, so as not to miss calls (*21* number#).
- 📱 Second second SIM Electronically (eSIM): Unfortunately, the Redmi Note 7 does not support eSIM, but you can use an external adapter (e.g., eSIM, SIM-Bluetooth keychain).
- 💾 Cloud Storage: If You Need a MicroSD, But Two SIM Move your files to Google Drive or Mi Cloud and use two SIM-card.
For business users who are critical to separate work and personal numbers, the best solution is to buy a smartphone with a dedicated microSD slot (for example, the Redmi Note 10 or POCO X3), which eliminates the need to choose between a second SIM and additional memory.
If you travel frequently, consider multi-sim roaming: some operators (like Tele2) offer free roaming rates in multiple countries, allowing you to use one SIM instead of two.