Xiaomi Mi 9 is the flagship smartphone of 2019, which is still relevant thanks to the powerful hardware and support for modern networks. SIM-maps: where is the tray, how to open it without a paper clip, is microSIM or only nanoSIM? In this article, we will discuss the process from A to Z - taking into account all the nuances of the model, including support for two physical SIM cards and eSIM (in some regions, we will discuss the process from A to Z - with all the nuances of the model).
If you are first encountering the Mi 9, it is important to know: here you can use a hybrid slot, where you can occupy the second connector or the second connector. SIM-You have to choose between two SIMs or one SIM card (up to 256 GB). + We'll show you how to make the right choices and avoid the typical "no network" problems after installation.
Preparation: What will be needed for installation SIM-map
Before you start installing, make sure you have everything you need. Unlike the old Xiaomi models, where the tray was opened with a nail, the Mi 9 uses a standard mechanism with a hole - you can not do without a special tool.
Here's the full list:
- 📱 Xiaomi Mi 9 (Switched off – it is necessary!).
- 📇 NanoSIM card (or two if you don't use microSD). Mi 9 doesn't support microSIM or standard SIM — nano-format!
If you don’t have the original Xiaomi paperclip, don’t use too thick objects (such as toothpicks or spokes) – they can damage the mechanism.
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Before installing the SIM card, check it on another phone so you will make sure that the problem is not in the operator, but in the installation process.
Where is the slot for SIM-Maps in Xiaomi Mi 9
In the Mi 9, the SIM card tray is located on the left side of the body (if you look at the screen), a typical place for Xiaomi flagships, but some users confuse it with a headphone jack or microphone.
- 📍 A small hole next to the volume buttons.
- 🔄 The outline of the tray, which is visible in bright light (it is slightly recessed in the body).
- 🚫 No other connectors on this side (except buttons).
The photo below shows the exact location (clickable in enlarged form):
If you can't find the hole, you may have a case on your phone. Take it off -- often the security blocks access to the slot. Also check if the hole is clogged with dust (relevant for phones that have been lying around for a long time without use).
Step-by-step: how to open the tray and insert the sim
Now, to the process itself, follow the instructions carefully, because improper removal of the tray can lead to a jamming.
Turn off your phone (required!).
Check that you have a nanoSIM (not a micro or standard).
Prepare a paperclip or a needle.
Make sure the tray is not blocked (no physical damage).
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Step 1. Turn off your smartphone.
It's critical, it's hot. SIM-cards (without turning off) may cause the communication module to fail.Push and hold the power button, then select Turn off.
Step 2. Remove the tray.
Put the paper clip in the hole next to the tray and press until you click. The tray should extend 1-2 mm, after which it can be pulled out with your fingers. Do not put too much effort — if the tray does not respond, check if it is stuck because of the dirt.
Step 3. Set it up. SIM-map).
There are accommodation schemes on the tray:
- 📱 Slot 1 — The main nanoSIM (supports) 4G/5G).
- 📱 Slot 2 is the second nanoSIM or microSD (but not simultaneously!).
The map should lie with gold contacts down, and the beveled angle coincides with the angle on the tray.
Step 4, put the tray back in place.
Carefully insert the tray back into the slot before the click. Make sure it sits straight -- if there's still a gap, the SIM can't contact. You can turn on the phone after that.
What to do if the tray is not inserted to the end?
Types. SIM-What is the best map for Xiaomi Mi 9
Xiaomi Mi 9 It only supports nanoSIM (format) 4FF, 12.3 × 8.8 If you have a different size card, you'll have to cut it off or replace it with the operator. Here's a comparison table of formats:
| Type SIM | Size | Is it good for Mi 9? | Notes |
|---|---|---|---|
| Standard SIM | 25 × 15 mm | ❌ No. | It's too big, physically unfit. |
| MicroSIM | 15 × 12 mm | ❌ No. | You can trim to nanoSIM, but there is a risk of damage. |
| NanoSIM | 12.3 × 8.8 mm | ✅ Yes. | The only format supported. |
| eSIM | Virtual | ⚠️ Partially. | It is only supported in some regions (e.g. China). |
If you have a microSIM, you can cut it to nano format with a stapler (sold in the salons) or with template scissors, but we don't recommend doing it yourself, because if you do it sloppy, the chip will damage and you'll have to change the card.
⚠️ Note: Some operators (e.g, Tele2) They give out combined maps where the nanoSIM is broken from the microSIM. If you have one, just separate the nano part by the perforation.
Frequent Mistakes and How to Avoid Them
Even with the right installation SIM-And these are the most common mistakes and their solutions:
- 📵 Phone can't see SIM. Reasons: The card is on the wrong side (turn it over). The tray is not fully inserted (check click). Simka is non-activated (calling operator). Slot is damaged (repair needed).
- 🔄 It's constantly switching between networks. → Select Network Mode Only 4G (If the problem persists, check the operator's coverage area.
- 📶 No. 5G. Mi 9 supports 5G Only in the Mi 9 Pro modification 5G. The normal version only works with 4G. To make sure, check the model in Settings → The phone. → Model.
⚠️ Note: If after installing the SIM phone says "Insert" SIM-map, but it's there -- try to wipe the contacts of the map and the tray with alcohol.
Another common problem is that two SIM cards conflict, and if you have two SIMs on your phone and one of them doesn't catch the network, check:
- 🔄 SIM card priority settings in Settings → SIM-maps and mobile networks.
- 📡 Support by the operator in Dual mode SIM (Some tariffs block this function).
Dual SIM and MicroSD: What to Choose
As we mentioned earlier, the Xiaomi Mi 9 has a hybrid slot, which means that the second slot can be used for either the second slot. SIM-card or microSD. Which option to choose?
Here's a comparison:
| Criteria | Two. SIM-map | One SIM + MicroSD |
|---|---|---|
| Convenience | ✅ Separation of work and personal calls | ❌ We need to switch between cards. |
| Memory. | ❌ Limited by built-in memory (64/128/256 GB) | ✅ It can be expanded to 256 GB |
| Speed. | ✅ Both SIMs are running at full speed. | ⚠️ microSD slower than internal memory |
| 5G | ⚠️ Only the main one. SIM (if maintained) | ✅ Basic SIM may be used 5G |
Our advice:
- 🏢 If you need two work SIMs (for example, for business trips) – choose Dual. SIM.
- 🎮 If you shoot a lot of videos or play heavy games, take a microSD (but note that not all apps can be transferred to the map).
- 💼 If you travel frequently, it is better to have two physical SIM (One is local, the other is home).
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Hybrid slot is the main compromise of the Mi 9. If you are critically important both SIM and memory, consider models with a separate microSD slot (for example, Redmi Note 10 Pro).
Xiaomi Mi 9 eSIM: Myth or Reality?
Many users ask: Does the Mi 9 eSIM support the built-in SIM? The answer depends on the regional version of the phone:
- 🇨🇳 Chinese version (Mi 9) - supports eSIM, but only for the second slot (the first is a physical nanoSIM).
- 🌍 Global version (Mi 9 Global) – no eSIM support (physical maps only).
To check your version:
- Go to Settings. → The phone.
- Find the line Model:
If your Mi 9 supports eSIM, you can activate it by:
- Operator (not all provide this service, for example, in Russia eSIM is available from MTS, Beeline, MegaFon).
- Menu Settings → SIM-maps and mobile networks → Add a mobile network (if you have an option).
⚠️ Note: Even if your Mi 9 supports eSIM, some carriers may block its activation on non-certified devices!