Shutdown SIM-Xiaomi Redmi 8 cards can be used in a variety of situations, from temporary deactivation of the number to a complete replacement of the operator, but many users face unexpected problems, from accidental locking of the number to loss of contacts. In this article, we will discuss all working ways to disconnect. SIM-maps on this model, including hidden functions MIUI, hardware methods and nuances of working with two SIMS.
It’s important to understand that simply removing a card from the tray doesn’t always amount to turning it off: the operator can continue to charge subscription fees and some services (such as banking applications) can block access. We’ll show you how to completely deactivate the SIM without consequences, while preserving all the data.
1.Switch off. SIM-cards via phone settings
The safest and most recommended method is to use built-in MIUI tools. This method is suitable for temporarily disabling one of the SIM cards (relevant to the two-sym version of Redmi 8) or completely deactivating communication.
To disable the SIM:
- Open the Settings menu (the gear icon on the main screen).
- Go to section. SIM-maps and mobile networks.
- Choose the right one. SIM-If there are two, they will be numbered as SIM 1 and SIM 2).
- Move the slider Include SIM-map off..
After that, the network icon on the notification panel will disappear, but the card itself will remain in the phone. the operator will not receive a signal to disconnect - the subscription fee will be charged as usual if you do not deactivate the number separately.
Upload contacts to Google Account|Disable binding to banking applications|Ensure that there is no active USSD-request|Save. SMS coded-->
2. Full extraction SIM-maps: step-by-step instructions
If you need to physically remove the card (for example, to replace it with a new one), follow this algorithm.Redmi 8 uses a hybrid tray, so it's important not to damage the mechanism.
You'll need:
- 🔧 Paperclip or special key to extract the tray (comprised with the phone).
- 📍 Good lighting – the extraction hole is located on the top of the phone.
- 🧲 Magnet (optional) - will help to hold the tray when extracted.
Process:
- Turn off the phone (press Power + Volume up for 3 seconds).
- Insert the paperclip into the hole on the top edge of Redmi 8 before clicking.
- Carefully stretch the tray - do not make an effort if it jammed.
- Extract. SIM-If necessary, replace it or leave the tray empty.
- Insert the tray back before the click and turn on the phone.
💡
If the tray is not inserted back, check the correct location SIM-Cards: the chip should be directed downwards, and the beveled corner - to the body of the phone.
Important: After the card is physically removed, the operator can lock the number after 30 to 90 days without activity. To avoid this, use alternative deactivation methods (see section 4).
3. Disconnecting the mobile network without removing the SIM
If you need to temporarily stop using mobile internet or calls, but leave the card on your phone (for example, to receive SMS), you can only turn off certain functions:
| Function | Path in settings | The effect |
|---|---|---|
| Mobile Internet | Settings → SIM-map → Mobile Internet | Disables data transfer, SMS and calls remain active |
| Calls. | SIM-cards → SIM-cards → Voice calls | Blocks outbound/inbound calls, SMS and internet work |
| SMS | No direct shutdown at MIUI | Third-party applications (e.g. SMS Blocker) are required |
| Roaming | Settings → SIM-cards → Roaming | Disconnects communication abroad, saving money |
This method is useful if you want to save battery power or avoid occasional calls, but still retain the ability to receive SMS (for example, for two-factor authentication).
Battery savings|Replacement of operator|Traveling abroad|Technical problems|Other-->
4. Deactivation SIM-map USSD-operator code
If you plan to completely turn off the number (for example, when changing the operator), it is not enough to simply remove the card from the phone. USSD-team:
USSD-codes for popular operators:
- 📱 MTS: Dial *111*09*2# and follow the instructions.
- 📱 Beeline: *110*09# → Selection of the item "Disable services".
- 📱 Megaphone: *105*09# → "Management SIM-card".
- 📱 Television2: *155*1# → "Shut down. SIM-map".
After shipping. USSD-The request number will be blocked within 1 to 24 hours, during which time you will not be able to restore access to the service. SIM Some operators (e.g. MTS) have a cooling period of up to 30 days when the number can be reactivated.
What happens if you don’t deactivate the SIM before you extract it?
5. Network resetting: when it helps
If SIM-The card is no longer defined by the phone (for example, after the update). MIUI It's sometimes helpful to reset your network settings, or to damage it mechanically. SIM, a restarts the communication module.
How to perform the reset:
- Open the Settings. → The phone.
- Press the MIUI version 7 times to activate the developer mode.
- Return to the main settings menu and select Additional → Network Reset.
- Confirm the action (you will need to enter a pattern lock or password).
After the restart, the phone will scan the available networks again. SIM-The card was deactivated software (for example, through settings), this method will not restore it - you will need physical extraction and re-installation.
💡
Resetting the network removes all stored Wi-Fi passwords and VPN-Pre-procedure backup through Settings → Google → Backup.
6. Frequent mistakes and how to avoid them
When disconnected SIM-Redmi 8 cards often have common problems, and here are the most common ones and the ways to solve them:
⚠️ Note: If after removal SIM-The phone stopped seeing the second SIM, check the tray is correctly installed. Redmi 8 has a sensitive contact mechanism - even a slight shift can lead to loss of communication.
Other common mistakes:
- 🔄 Cyclical reboot after retrieval SIM — Solution: Clean the contacts with alcohol and gently insert the tray back in.
- 📵 No network after switching on SIM — Check if the "In the Airplane" mode is activated (Settings) → Connections → Flight mode).
- 🔒 Blocking banking applications - before disconnecting SIM untie it in the mobile bank settings.
- 📱 The phone can't see. SIM post-refresh MIUI — Install the latest firmware version through Settings → Updating the system.
If none of the methods helped, the problem may be a hardware malfunction (damaged) SIM-In this case, we recommend you to contact the Xiaomi service center.
7. Alternative methods: In-plane mode and third-party applications
If you need to quickly disable communication without deep settings, you can use:
On the plane mode:
- Disables all wireless modules (SIM, Wi-Fi, Bluetooth).
- Activated via notification panel or Settings → Connections → Flight mode.
- Does not affect the operator’s work – subscription fee is debited in the usual mode.
Third-party applications (such as Dual Apps or Parallel Space):
- They can create a sandbox for the second. SIM-maps with separate settings.
- They can block calls/SMS for the selected SIM without physically shutting it down.
- Requires superuser rights (root) for full operation.
These methods are suitable for temporary function restriction, but do not replace complete operator-assisted deactivation.