Replacement SIM-The Xiaomi Redmi 10 seems like a simple procedure, but even here there are nuances that many people don’t know about, such as why the card slot sometimes “goes up”, how to insert the nano-SIM correctly so as not to damage contacts, or what to do if the phone stopped seeing the network after replacing. In this article, a detailed instruction with photos, videos, compatibility tables and solutions to typical problems.
Redmi 10 (codename selene) supports two nano-SIMs or one nano-SIM + microSD card up to 512 GB. But not everyone knows that when using two SIMs simultaneously, 4G speed can be limited on the second card - this is a feature of the hardware platform. We will tell you how to avoid replacement errors, what tools you will need, and what to do if the phone does not recognize the new SIM.
Preparation for replacement SIM-maps: what you need to know
Before you remove the tray, make sure you have at hand:
- 🔧 A paper clip or tool to remove the tray (complete with the phone, but often lost) will fit the unbended paper clip.
- 📱 New nano-SIM (if you cut the micro-SIM yourself – check if there are no burrs on the edges).
- 🔍 Good lighting: the hole to extract the tray is small, and in the dark it is easy to miss.
- 📌 Tweezers (optional if) SIM It sits tightly in the tray and it is difficult to remove it with your fingers).
Important: Redmi 10 does not support eSIM, so a physical card is required. If you are switching from another carrier, make sure the new SIM is activated - some carriers require a call from another phone to activate.
Tray for SIM-The maps in Redmi 10 are on the left side of the card (if you look at the screen), and the clip hole is next to the volume button. Don't confuse it with a microphone or speaker!
⚠️ Note: Do not use sharp objects (needles, pins, knives) to remove the tray; this may damage the fixing mechanism or scratch the body.
Step-by-step instructions: how to remove and insert SIM-map
Follow this algorithm to avoid errors:
- Turn off your phone.This is not necessary, but it is recommended to avoid accidental touches of the screen or crashes when rebooting the network.
- Find the opening to remove the tray on the left side (see photo below) and insert the clip to the end, so you can hear a slight click.
- Carefully pull the tray over the protruding part. Don't make any effort -- if the tray doesn't go, check if the paperclip is fully in.
- Put it down. SIM-card(s: 📶 For one. SIM: place it in the slot SIM 1 (usually marked with gold contacts). 📶📶 For two. SIM: Put the second card in the slot SIM 2.Note the notch on the corner of the card – it should match the shape of the slot. 💾 For memory card: use a microSD slot, but remember that the second slot SIM will be blocked (hybrid tray).
Put the tray back in.
Turn on the phone.
☑️ Check before turning on the phone
If your phone doesn’t see the network after replacing the SIM, try:
- 🔄 Reset the device.
- 📶 Manually select the operator in the settings: Settings → SIM-maps and mobile networks → Choice of network.
- 🔧 Check if your contacts are contaminated SIM-card or tray (wipe with dry cloth).
What are they? SIM-The cards are supported by Xiaomi Redmi 10
Redmi 10 only works with nano-SIM (4FF) cards, and if you have a different size card, you'll have to cut it off or replace it in the carrier's cabin.
| Type SIM | Support | Notes |
|---|---|---|
| nano-SIM (4FF) | ✅ Yes. | Standard format for the model. |
| micro-SIM (3FF) | ❌ No. | Trimming or replacement is required. |
| mini-SIM (2FF) | ❌ No. | Incompatible with the tray. |
| eSIM | ❌ No. | The model does not support built-in SIM. |
Important: If you trim the micro-SIM to nano-SIM yourself, use a template or a special cutter. Uneven edges can damage the contacts in the tray or lead to a poor connection.
Redmi 10 has Dual support SIM Dual Standby (DSDS). Which means both of you SIM-The cards can be active at the same time, but:
- 📞 One at a time, one at a time. SIM second will be unavailable.
- 🌐 Speed. 4G/LTE may be limited to the second SIM (depends on the operator).
- 📶 When the signal is weak, one of the cards can be automatically turned off to save energy.
Frequent Mistakes and How to Avoid Them
Even with the seemingly simple procedure, users often face problems.
⚠️ Note: If after replacement SIM The phone says "No network" or «SIM-The card is not discovered, do not rush to bring it to the service. In 90% of cases, the problem is solved software or by re-installing the card.
Mistake 1: The tray is not being removed.
Causes and solutions:
- 🔧 The paperclip didn't fully enter the hole. → Press harder (but without fanaticism!).
- 🔄 The tray was skewed during the previous installation → Then, gently swing it left-right, pulling the clip.
- 💧 There was dirt or moisture in the mechanism. → Use alcohol and cotton swab for cleaning (pre-dry the phone!).
Mistake 2: The phone can't see SIM-map.
Check it out.
- 🔍 Contacts on the map and in the tray (wipe with a swallow or alcohol).
- 📶 Correct installation: the card should lie in contacts down, cutout to the corner.
- 🔄 Reboot your phone (sometimes the system doesn’t recognize a new one right away) SIM).
- 📱 Network settings: Settings → SIM-maps and mobile networks → Name of the access point (APN) → Choose the correct operator profile.
Mistake 3: Mobile Internet is not working.
If the phone is not available and the internet is not available:
- 🌐 Make sure that mobile data is included for the right SIM: Settings → SIM-maps and mobile networks → Mobile traffic.
- 🔧 Check the settings. APN (Usually set up automatically, but sometimes manual input is required).
- 📡 Switch the network mode to 4G/3G/2G (auto) in settings SIM-map.
What to do if the tray breaks down?
How to set up two SIM-maps in Redmi 10
If you use two of them SIM-Maps, set priorities for calls and the internet:
- Go to Settings. → SIM-maps and mobile networks.
- Select Names. SIM-cards to assign them convenient labels (for example, "Worker" and "Personal»).
- In the SIM card section, install the default: 📞 Calls: Choose SIM for outgoing calls. 💬 SMS: Specify SIM message-post. 🌐 Mobile data: select SIM Internet (can be changed in the notification panel).
Double 4G
Advice: if one of the SIM It's only used for calls, and you can turn off the mobile Internet to save battery power. SIM-map.
💡
To quickly switch between SIM-call cards, hold the call button in the phone application - the selection menu will appear SIM.
Video instruction: replacement SIM-maps in Redmi 10
For clarity, we recommend watching a video with a step-by-step process:
Video 1: Removal of the tray and installation SIM-maps (Xiaomi Tips channel):
https://www.youtube.com/watch?v=EXAMPLE_1 (Replace with the current reference).
Video 2: Solving the problem «SIM-map not found by the Android Repair channel):
https://www.youtube.com/watch?v=EXAMPLE_2.
Note: Some videos show the Redmi Note 10, but the process for the Redmi 10 is identical – the difference is only in the location of the tray (in the Note 10 it is on the right).
What to do if after replacing the SIM phone does not catch the network
If all the tray and card manipulations didn't work, the problem could be deeper.
- Check IMEI: Dial *#06# - if IMEI is missing or "Null", it's a hardware problem (requires repair). If IMEI is displayed but no network - the problem is firmware or settings.
Reset the network settings:
Go to Settings → System → Additional → Network reset. This will delete stored Wi-Fi and cellular settings, but will not affect personal data.
Update the firmware:
Go to Settings → About Phone → Update and install the latest patches. Sometimes SIM errors are fixed in newer versions of MIUI.
Check the operator lock:
If the phone is purchased from the operator (for example, in the salon of MTS or Beeline), it can be locked under the SIM of this provider.
⚠️ Note: If after replacement SIM Your phone is overheating or running out quickly, which may indicate that your contacts are damaged in the tray.
💡
Before visiting the service center, check the efficiency SIM-If it doesn't work there, it's the operator's problem, not your Redmi 10.