Xiaomi Redmi Note 7 is one of the most popular smartphones in the budget segment, released in 2019. Despite its age, the model is still in demand due to its balanced characteristics and affordable price. SIM-maps: whether it's a two-sim machine, or a hybrid slot limits the possibilities. In this article, we'll go through all the nuances in detail, from technical specifications to practical tips for using the device.
Let’s start with the main question: Redmi Note 7 It supports two nano-SIM cards, but with an important caveat, because the card slot in this model is hybrid (2+1), What is the possibility of choosing between the second SIM-This is a typical solution for Xiaomi budget smartphones of the period, and it requires careful approach when setting up. Next, we will explain how this works in practice, what limitations exist and how to get around them without losing functionality.
Technical characteristics of the slot SIM-Maps in Redmi Note 7
The official specifications of the Xiaomi Redmi Note 7 state that the device is equipped with a hybrid slot for two nano-SIM (4FF) or one nano-SIM + microSD card (up to 256 GB).
- 📱 Option 1: Two nano-SIM cards (without microSD).
- 💾 Option 2: One nano-SIM + microSD card (second card) SIM It doesn't work).
It is important to understand that the simultaneous use of two SIM-It's not possible to have a card or a memory card, and it's a hardware-based limitation. SIM-Cards support standards 4G LTE, But with nuances: in Dual mode SIM Only one network is active. 4G (second-in-command 3G/2G).
Technical details of the slot:
- 🔧 Type of slot: Hybrid (2 nano-SIM or 1 nano-SIM) + microSD).
- 📶 Network support: GSM / CDMA / HSPA / LTE (Depends on the regional version).
- 🔄 Dual Standby: Yes (both) SIM active, but only one in 4G).
- ⚡ VoLTE: Supported but only on one SIM-map.
How to properly install SIM-maps: step-by-step instructions
Installation SIM-The cards in the Redmi Note 7 require care, especially if you plan to use a hybrid slot for the memory card:
- Turn off your smartphone to avoid damaging your contacts.
- Find a slot for SIM-cards on the left side (near the volume buttons). Use a clip or a special key from the kit to remove the tray.
- Place nano-SIM cards in the tray according to markup: 📌 Slot 1 (SIM1): The main slot, supports 4G/3G/2G. 📌 Slot 2 (SIM2/microSD): Hybrid or second SIM, microSD.
Carefully insert the tray back before the click. Don't put too much effort into it!
Turn on your phone and check card recognition in Settings → SIM-maps and mobile networks.
☑️ Pre-installing check SIM-map
If the phone does not recognize one of the SIM-smack-drive:
- 🔄 Reset the device.
- 🧹 Clean the contacts of the card with a soft cloth (without alcohol!).
- 🔧 Check if the card is correctly placed in the tray (chip down).
⚠️ Note: Do not use micro-SIM or standard adapters SIM-The Redmi Note 7 only supports the nano-SIM format.
Dual SIM vs. Memory Card: Which one to choose?
Redmi Note 7’s biggest compromise is that it’s impossible to use two at the same time. SIM-So, what's your preference for cards and microSD? Let's look at the pros and cons of each one:
| Option | Advantages | Deficiencies |
|---|---|---|
| Two. SIM-map | 📞 Separation of personal and work numbers. 🌍 Roaming without changing the card. 💰 Savings on calls (different rates). | 🚫 No way to expand memory. ⚡ Battery is used faster (two networks). |
| One SIM + MicroSD | 📁 Additional 256 GB for photos, videos, apps. ⚡ Lower battery consumption. | 📵 No second. SIM-map. 🔄 You need to restart your phone when changing cards. |
The choice depends on your priorities:
- 👔 For business: Two SIM-cards (working) + personal).
- 🎮 For gamers/photographers: One SIM + microSD (more space for files).
- 🌐 For travellers: Two SIM (local + home).
💡
If you need two of them critically. SIM-maps, and additional memory, consider the option of cloud storage (Google Drive, Mi Cloud) or OTG-adapter-drive.
Dual SIM in the Redmi Note 7
Even if you choose the option with two SIM-With maps, there are a few important points worth knowing about:
- Limitation 4G: Only one. SIM-The card can work on the network 4G LTE (the second automatically switches to 3G or 2G). To change priority SIM, Go to Settings. → SIM-maps and mobile networks → Preferred network.
- VoLTE: Voice Calling Technology 4G It is supported, but only on one SIM-If you call from the second card. SIM, connection will be through 3G/2G.
- Network switching: When one of the SIM signals is weak, the phone can automatically switch to a more stable network, sometimes leading to a breakdown of the internet.
It is also worth considering that some operators (such as Tele2 or Iota) may have restrictions on working in Dual SIM mode.
- 📡 Settings APN (point).
- 🔄 Network mode (automatic/manual).
- 📋 Compatibility of the operator with Xiaomi Redmi Note 7 (list of supported frequencies: LTE B1/3/5/7/8/20/38/40).
⚠️ Note: If you use two of these SIM-cards of one operator (for example, two MTS cards), conflicts may occur with simultaneous incoming calls, in which case one of the cards will be unavailable until the conversation on the other is completed.
How to expand your memory when you use two SIM-map?
If you have chosen the option with two SIM-I have a memory deficit, but there are several alternative solutions:
- ☁️ Cloud storage: Mi Cloud (15GB free for Xiaomi users); Google Drive (Integration with Android); Yandex Drive (10GB free).
- 🔌 OTG-flash drive: Through adapter USB-C → USB-A You can connect an external drive (up to 1 TB), read/write speed will be lower than that of internal memory, but it is an outlet for storing media files.
- 📁 Memory optimization: Move the app cache to the memory card (if it’s temporarily installed) or clear unnecessary files through Settings → Warehouse.
For connection OTG-flash-drive:
- Buy a USB-C (male) → USB-A (female) adapter.
- Insert the flash drive into the adapter and connect to the smartphone.
- The notifications will have the option "Use as USB-accumulator".
- Files will be available in any file manager (e.g. Mi File Manager).
How to transfer applications to OTG-flash drive?
Frequent problems and their solutions
Redmi Note 7 users sometimes face typical problems related to the use of the SIM-Here are the most common ones and how to eliminate them:
| Problem. | Possible cause | Decision |
|---|---|---|
| The phone can't see. SIM-map | Incorrect installation, damaged contacts, incompatible operator. | Reset the map, clear the contacts with alcohol, check for frequency support. |
| There is no network on one of the SIMs | Failure in settings. Operator restriction. | Reset your phone. Reset your network settings (Settings) → SIM-map → Reset). |
| 4G does not work on the second SIM | Dual SIM (only one card in 4G) | Manually select the priority SIM in Settings → Mobile network. |
If none of these things worked, there might be a hardware problem.
- Check it out. SIM-card.
- Update your firmware to the latest version (Settings → About Phone → System Update).
- Contact the service center (possibly damaged slot).
💡
If the phone stopped seeing SIM-cards after falling or getting moisture, do not try to disassemble it yourself - this can lead to a short circuit.
Comparison with other Xiaomi models
To understand how relevant the limitations of the Redmi Note 7, compare it with other popular models of Xiaomi for support of SIM-cards:
| Model | Slot type | Dual 4G | VoLTE on both SIMs |
|---|---|---|---|
| Redmi Note 7 | Hybrid (2+1) | No (only one SIM in 4G) | No. |
| Redmi Note 8 | Hybrid (2+1) | No. | No. |
| Redmi Note 10 | Hybrid (2+1) | Yes (on some firmware) | Yes. |
| POCO X3 | Double (2 SIM + microSD) | Yes. | Yes. |
As you can see from the table, the Redmi Note 7 is inferior to newer models in the flexibility of use. SIM-But for its time in 2019, it was standard, if you're critically interested in two full-fledged solutions. 4G SIM-Consider the newer models, such as the Redmi Note 11 or POCO X4 Pro.