Xiaomi Mi 8 is the flagship smartphone of 2018, which is still relevant thanks to powerful hardware and support for updates. But even experienced users sometimes have questions about basic operations, such as how to insert correctly. SIM-In this article, we'll look at the process from A to Z, from preparing a SIM to solving possible problems.
It is important to consider that the Mi 8 supports two physical slots: one for nano-SIM, the second for hybrid (nano-SIM or microSD). If you plan to use two SIMs, you will have to sacrifice a memory card. In some regions, support for eSIM is available, but its configuration requires a separate procedure.
We will take a detailed look at all the options, from mechanical installation to software activation of eSIM, and also tell you what errors users most often make and how to avoid them.
What are they? SIM-The cards are supported by Xiaomi Mi 8
Xiaomi Mi 8 is equipped with two slots for cards, but with important nuances:
- 📱 Slot 1: nano-SIM (format) only 4FF, 12.3×8.8 Supports networks 2G/3G/4G, firmware — 5G (if the operator provides such an opportunity).
- 🔄 Slot 2: Hybrid – either second nano-SIM or microSD (up to 256 GB). 4G, but at the same time two sims in 4G Not supported (one will be in the 3G).
- 🌐 eSIM: available only in models for Europe and China (check the label on the box: if there is a Dual label) SIM, eSIM, which means it is supported).
If your old SIM card (mini-SIM or micro-SIM) needs to be trimmed to nano-format or replaced in the cabin of the operator, the use of adapters is not recommended - they can get stuck in the slot or damage the contacts.
⚠️ Note: Not all operators support eSIM for Xiaomi Mi 8. For example, in Russia for 2026 virtual SIMs for this device officially do not provide Beeline and Tele2, and MTS and MegaFon - only for corporate customers.
| Type SIM | Support for Mi 8 | Max, speed. | Notes |
|---|---|---|---|
| nano-SIM (slot 1) | Yes. | up to 1 Gbps (LTE Cat.16) | The main slot, supports VoLTE |
| nano-SIM (slot 2) | Yes. | up to 300 Mbps (LTE Cat.6) | When using two sims, the second one works in 3G. |
| microSD | Yes (instead of the 2nd SIM) | — | Max. volume of 256 GB, exFAT/FAT32 format |
| eSIM | Yes (in some regions only) | up to 1 Gbps | Requires activation through the operator |
Preparation for installation: what will be needed
Before inserting the SIM, prepare everything you need:
- 🔧 A paper clip or tool to remove the tray (combined with the phone) If you lose it, an unbended stationery clip or a thin needle will do.
- 📇 SIM-Nano map (if you have a map) micro/mini — trim or replace).
- 🔍 Good lighting: the hole to extract the tray is small, easy to miss.
- 🧴 Alcohol wipes (optional): to wipe the contacts of the simk, if it was previously used.
If you install a second SIM, consider that if you have an active memory card in slot 2, you will have to choose which is more important: additional storage or a second link. Also check whether your operator supports two SIMs at the same time - some tariffs block this feature.
⚠️ Warning: Do not use metal objects with sharp edges (knives, scissors) to remove the tray.This can scratch the body or damage the fixation mechanism.
☑️ Preparation for installation SIM Xiaomi Mi 8
Step-by-step instruction: how to insert SIM-map
Now, let's get to the process. Follow the instructions to avoid mistakes.
- Turn off your smartphone. It's a must-do step -- hot SIM replacement can cause a modem to malfunction. Press the power button and select Turn off.
- Find a tray for SIM-In the Xiaomi Mi 8, it's on the right end (if you look at the screen) and the hole to extract is small, next to the volume button.
- Remove the tray: Put the paper clip into the hole to the point (there should be a tangible click). The tray will extend 1-2 mm - carefully pull it with your fingers. Don't put too much effort: if the tray does not come out, check if the end of the clip is bent.
- Install. SIM-Map: Place the tray on a flat surface with the contacts up. Place the nano-SIM in the appropriate groove (the tray has a hint with the silhouette of the map). If you install two SIMs, the second goes into a smaller groove (slot 2).
Put the tray back in:
- Make sure that the SIM does not protrude beyond the edges of the tray.
- Insert the tray into the smartphone before clicking (should stand flush with the body).
- Turn on your phone and wait for the network to be determined. If the SIM doesn't recognize you, restart the device.
Note that when two SIMs are active, one of them will be 3G (even if both support 4G), which is a hardware limitation of the Mi 8. To return 4G to the second SIM, turn off mobile Internet on the first.
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For convenience, you can configure quick SIM switches in the notification curtain. Click the empty space in the top panel with your finger and add the Mobile Data widget or «SIM-map».
Frequent questions about SIM-Maps in Xiaomi Mi 8
Can Xiaomi Mi 8 use a SIM and a memory card at the same time?
Does Xiaomi Mi 8 support 5G?
What to do if the SIM tray is stuck?
How to check if my Xiaomi Mi 8 eSIM supports?
Can you trim micro-SIM to nano-SIM for Xiaomi Mi 8?
Conclusion: operational advice
Now you know how to insert correctly. SIM-map in Xiaomi Mi 8 and configure its work:
- 🔄 Regularly (every 3-6 months) remove the tray and clean the contacts of the SIM and slot from dust.
- 📶 If you lose a network often, try turning off automatic network selection in the settings and manually specify the operator.
- 🔋 At low signal levels (1-2 divisions), the SIM can drain the battery faster due to constant network search. 2G customized.