Xiaomi Redmi 10 Pro is a popular smartphone with support for two nano-SIM and a slot for a microSD card up to 1 TB. But even experienced users sometimes have questions: how to insert a SIM without damaging the tray? Where is the slot? And what to do if the phone does not see the card after installation?
This article provides step-by-step photo instructions, common bugs and troubleshooting solutions to help avoid breakdowns, and tips for choosing a SIM card and answers to questions about carrier compatibility. If you just bought a Redmi 10 Pro or are planning to change your SIM, read on!
1. What will be required for installation SIM-map
Before you start, prepare everything you need. Without these items, you will not be able to insert the SIM correctly or risk damaging the slot.
- 📱 Xiaomi Redmi 10 Pro (Switched Off!) Make sure the battery is at least 20% charged - this will eliminate a sudden shutdown during the process.
- 🪛 A paper clip or a key to extract the tray, and the phone comes with a special metal key, but an unbended clip will do, as long as the end is thin and not bent.
⚠️ Warning: Do not use needles, toothpicks or other sharp objects to open the tray! They can damage the mechanism or scratch the body. Also avoid magnetic tools - they can disrupt the sensors of the smartphone.
2 Where is the slot for SIM-Cards in Redmi 10 Pro
In the Xiaomi Redmi 10 Pro, the SIM card tray is located on the left end of the case (when you look at the screen with the front side), and it is easy to recognize from the small hole next to it - this is the extraction connector.
The outside of the slot looks like a thin slot with a metal edging, and above it there's usually a microphone or a volume button, which will help you navigate, and if you hold the phone in your hands, the tray is about the level of the middle finger.
| Characteristics | Description |
|---|---|
| Slot location | Left end, under the volume buttons |
| Slot type | Hybrid (2 nano-SIM or 1 nano-SIM + microSD) |
| Max, the volume of the MicroSD | Up to 1 TB (up to 512 GB recommended) |
| Support for 5G support | Yes, but only on the main SIM (slot 1) |
💡 Useful tip: If you can't find a slot, flash a flashlight on the end of the phone. The clip hole will reflect light and it will be easier to spot.
3. Step-by-step instruction: how to insert SIM-map
Now, to the process itself, follow the instructions in strict order to avoid jamming the tray or damaging the contacts.
☑️ Preparation for installation SIM-map
- Turn off your smartphone. Press and hold the power button, then select Turn off. Wait for the screen to be completely turned off. SIM card installation when your phone is on can cause the network to crash or damage the communication module.
- Remove the tray. Put the paper clip in the hole next to the slot and press before you click. The tray will extend a few millimeters -- gently pull it out with your fingers. Don't put too much effort into it!
- Place it. SIM-There are layouts on the tray: 📶 Slot 1 (top) - main SIM (supports) 5G). 📶 Slot 2 (bottom) – Second SIM or MicroSD (but not simultaneously!).
Make sure the golden contacts of the SIMKA look down and the bevelled angle coincides with the angle on the tray.
Put the tray back in.
Carefully press the tray into the slot before you click. It should enter smoothly, without distortion. If you feel resistance, pull out and check the correct installation of the sims.
Turn on the phone.
Press the power button and wait for the download. In 10–30 seconds, the network indicator (for example, 4G or 5G) will appear in the status bar.
⚠️ Warning: If the phone doesn't see the SIM card after turning on, don't immediately try to retrieve the tray. First, reboot the device or check the network settings in Settings → SIM-maps and mobile networks.
What if the tray is jammed?
4 How to Insert MicroSD in Redmi 10 Pro
The memory slot in Redmi 10 Pro is paired with the second SIM tray, which means you can use either two SIMs or one SIM + MicroSD. Two SIMs and a USB drive are not working at the same time!
Instructions for installing MicroSD:
- Turn off the phone and remove the tray (as described above).
- Put the nano-SIM in slot 1 (top) and the MicroSD in slot 2 (bottom).If you only need a flash drive, leave slot 1 empty.
- Make sure the memory card is inserted with golden contacts down and down, and it should sit tightly, without backlash.
- Put the tray back in and turn on the phone.
7. Frequent problems and their solutions
Sometimes even after the SIM card is installed correctly, there are problems, and let's look at the most common cases and how to fix them.
| Problem. | Possible cause | Decision |
|---|---|---|
| Phone doesn't see SIM card | The card is inserted incorrectly, damaged or inactive | Reinstall the SIM, check it on another phone, contact the operator |
| No network or "Emergency Calls Only" | No coverage, SIM not activated, error in settings | Check the coverage area, restart the phone, update the operator settings |
| MicroSD is not defined | The card is not formatted, damaged or incompatible | Format the card on your phone, check it on your PC, try another MicroSD. |
| The tray is not fixed or falls out | The fixation mechanism or a foreign object in the slot is damaged | Clean the slot from dust, contact the service center |
If none of these methods worked, try resetting your network settings:
- Go to Settings. → SIM-maps and mobile networks → Resetting network settings.
- Confirm the action (you will need to enter a pattern lock or PIN).
- After restarting, the phone will reconnect to the network automatically.
⚠️ Attention: Network reset will delete all stored Wi-Fi passwords and associated Bluetooth devices.
💡
If the SIM card issues have occurred after the firmware update, try rolling back on the previous version of MIUI or wait for a patch from Xiaomi. Network bugs are often fixed in the next updates.