You just bought a new Xiaomi smartphone or inserted a new one. SIM-The problem may not be the operator, but the incorrect activation of the SIM. In this article, we will discuss all possible ways to activate the SIM. SIM-maps on Redmi devices, POCO Mi – from physical installation to software settings.
It is important to understand that the activation process may differ depending on the model of the smartphone, the type of device. SIM-maps (nano, micro, eSIM) and even firmware versions MIUI. We’ll look at the universal methods that work on 90% of Xiaomi devices, and also point out the typical errors that can cause the SIM to be undetected.
If you have a problem like “no network", "SIM-No card detected" or "only emergency calls, do not rush to carry the phone to the service center. 5-10 minute.
1. Preparation SIM-pre-installing
Before you put it in. SIM-Xiaomi card, make sure it's compatible with your device.Modern Xiaomi smartphones support:
- 📱 Nano-SIM (most common format, used in 99% of models after 2016)
- 🔄 Micro-SIM (found in older models, such as Redmi) 3S Mi 4)
- 📲 eSIM (supported in flagships: Xiaomi) 13, 14, Mix Fold 2/3 and some models POCO)
If you're normal. SIM-The card (mini-SIM) must be trimmed to nano-SIM or replaced in the operator's cabin, and the use of adapters or homemade trimming can damage the slot contacts or the SIM itself, which will later require repairs.
Also check:
- ✅ Active? SIM-card with the operator (sometimes new SIMs require prior activation via the site or call)
- ✅ Is there any physical damage to the chip (scrapes, chips, traces of oxidation)
- ✅ Does your Xiaomi support your carrier’s frequencies (especially when traveling abroad)
⚠️ Note: If you use two of these SIM-For example, in the Redmi Note 10 Pro, the second slot is hybrid: either the second nano-SIM or the microSD card.
Physical installation SIM-maps in Xiaomi
The process of installing the sim depends on the type of tray:
- Turn off your smartphone (not necessarily, but it is recommended to avoid crashes).
- Find a slot for SIM-cards - usually located on the upper or lateral face of the device.
- Use a paper clip or a special key (comes in the kit) to retrieve the tray. Put it in a small hole before you click.
- Place it. SIM-card in tray chip down, observing the contours (the tray usually has a hint).
- Carefully insert the tray back before the click.
If the tray is not inserted to the end:
- 🔍 Check if the SIM is correctly located (it may be inverted).
- 🧹 Clean the tray from dust or debris (you can use a dry brush).
- 🛠️ Don’t put too much effort into it – it can bend contacts!
☑️ Check before turning on the phone
Once installed, turn on your smartphone and wait for it to load. If done correctly, a network indicator (e.g., "4G", "5G" or operator name) will appear in the top bar. If you don't have a network, move on to the next section.
3. Program activation SIM-card MIUI
Sometimes the SIM is physically set correctly, but the smartphone doesn't recognize it, and then manual activation through settings will help.
- Open the Settings. → SIM-maps and mobile networks.
- Choose yours. SIM-card (if there are several).
- Make sure the "Switch on" switch SIM-The card is active (must be blue).
- Check the parameters: 📶 Type of network: recommended "4G (preferably" or "5G" (if maintained). 🔄 Network Mode: "Automatically" or manually select your operator. 📞 Voice calls: must be enabled with "VoLTE" (if supported by the operator).
Save the settings and restart the phone.
If SIM-The map is still undetermined, try it:
- 🔄 Switch the network type (e.g., with) 4G on 3G back and forth).
- 📱 Reset network settings in Settings → System system → Resetting settings → Resetting Wi-Fi, Mobile Network and Bluetooth.
- 🔧 Update the firmware (sometimes bugs) MIUI interfere with the correct operation of the sim).
What to do if the settings do not appear SIM-map?
4. activate eSIM in Xiaomi (for supported models)
If your Xiaomi supports eSIM (built-in) SIM-The activation process will be different. eSIM is currently available in the following models:
| Series | Supported models | MIUI version |
|---|---|---|
| Xiaomi 13 | 13, 13 Pro, 13 Ultra | MIUI 14 and higher |
| Xiaomi 14 | 14, 14 Pro, 14 Ultra | MIUI 14 and higher |
| Mix Fold | Mix Fold 2, Mix Fold 3 | MIUI 13/14 |
| POCO | POCO F5 Pro (in some regions only) | MIUI 14 |
To activate the eSIM:
- Get it from the operator. QR-activation code or data (usually sent by email).
- Open the Settings. → SIM-maps and mobile networks → Add a mobile fare.
- Select "Use eSIM".
- Scan it. QR-code or enter data manually.
- Confirm activation and wait for the network connection (it can take up to 5 minutes).
⚠️ Note: Some operators (such as Tele2 in Russia) do not officially support eSIM on Xiaomi.
5. Typical errors and their solutions
If SIM-The card is not activated, check the following points:
| Problem. | Possible cause | Decision |
|---|---|---|
| "SIM-map not found" | Incorrect installation, damage to the SIMKA | Reset the SIM, check on another phone |
| "Emergency calls only" | No registration of the operator's network | Select the operator manually in the settings |
| "No service." | Problems with firmware or communication module | Update MIUI or reset your network settings |
| Simka works, but there's no internet. | Not set up by APN | Add APN manually (the data can be obtained from the operator’s website). |
If none of these methods worked, try:
- 🔄 Insert SIM-card to another smartphone – if it does not work, the operator has a problem.
- 📱 Test another SIM in your Xiaomi – if it works, the problem is in the first SIM.
- 🔧 Reset all settings (not data!) in Settings → System system → Resetting settings.
💡
If you are traveling abroad and locally SIM-The card is not determined, check the supported frequencies of your Xiaomi.For example, some models for China do not work with European operators in the 800 MHz band.
Activation SIM-post-fixing
After a hard reset or flashing, Xiaomi may forget the network settings.
- Go to Settings → About Phone → The MIUI version and click on it several times to unlock the developer mode.
- Return to Settings → Additional → For developers and turn on “Flight Mode”, then turn it off.
- Reboot the phone.
- If the network does not appear, manually add APN (Access points: Go to Settings → SIM-maps and mobile networks → [yours SIM] → Access points (APN). Press "+" and enter your operator's details (can be found on its official website). APN.
If you were flashing your phone through Fastboot or TWRP, you might have an IMEI.
- Check the IMEI by typing *#06#.
- If the IMEI is missing or incorrect, restore it using the SN Write Tool (requires authorization to the Mi Account).
💡
After resetting or firmware, always check IMEI. Without the right one. IMEI The mobile network will not work, even if SIM-card.
7. Features of activation of SIM in different models of Xiaomi
Some Xiaomi models have unique nuances when working with the SIM-map:
- 📱 Redmi Note 12/13: Supporting. 5G, In some regions, you need to manually enable Settings. → SIM-map → Type of network → 5G.
- 📱 POCO F5/X5: Have a hybrid slot - you can not use two at the same time SIM-memory-card.
- 📱 Xiaomi 13T/14: Supports Dual 5G (both SIM-cards can work in 5G simultaneously).
- 📱 Redmi 10A/12C: Budget models may not support VoLTE – calls will go through 3G.
For older models (for example, Redmi 4X, Mi A1), the following problems are relevant:
- 🔌 Lack of support for modern frequencies 4G/5G.
- 🔄 Micro-SIM recognition problems (resolved by a nano-SIM with an adapter).
- 📵 Frequent communication interruptions due to outdated communication module.