Table of contents

Enable or Disable Sim cards Change name of sim card Default SIM card for mobile data Default SIM card for calls Mobile data during a call on secundary SIM

Enable or Disable Sim cards

If we use dual SIM on the Xiaomi smartphone, we can deactivate one SIM card if desired, which means that no calls or messages are put through or received from the selected SIM.

Android 10 (MIUI 12.0)
Step 1:  Open the  Settings
Step 2:  Tap on  SIM cards & mobile networks
Step 3:  Choose a  SIM card   (Dual SIM)
Step 4:  Enable or disable  Turn on
  1. Open the Settings
  2. Tap on SIM cards & mobile networks
  3. Choose a SIM card (Dual SIM)
  4. Enable or disable Turn on

Change name of sim card

If, for example, we use two SIM cards (dual SIM) from the same provider with the Xiaomi smartphone, it is advantageous to rename the SIM cards so that they can be kept apart.

Android 10 (MIUI 12.0)
Step 1:  Open the  Settings
Step 2:  Tap on  SIM cards & mobile networks
Step 3:  Choose a  SIM card   (Dual SIM)
Step 4:  Tap on  Edit SIM card name
Step 5:  Enter a  name  and tap  OK
  1. Open the Settings
  2. Tap on SIM cards & mobile networks
  3. Choose a SIM card (Dual SIM)
  4. Tap on Edit SIM card name
  5. Enter a name and tap OK

Default SIM card for mobile data

For Xiaomi smartphones with two SIM cards, we can define a default SIM card for mobile data.

Android 10 (MIUI 12.0)
Step 1:  Open the  Settings
Step 2:  Tap on  SIM cards & mobile networks
Step 3:  Choose a  SIM card  for mobile data  (Dual SIM)
  1. Open the Settings
  2. Tap on SIM cards & mobile networks
  3. Choose a SIM card for mobile data (Dual SIM)

Default SIM card for calls

By default, the Xiaomi smartphone asks us which SIM card to use for outgoing calls. To disable the question, we can also set a SIM card as the default.

Android 10 (MIUI 12.0)
Step 1:  Open the  Settings
Step 2:  Tap on  SIM cards & mobile networks
Step 3:  Choose a default  SIM card  or  Not set
  1. Open the Settings
  2. Tap on SIM cards & mobile networks
  3. Choose a default SIM card or Not set

Mobile data during a call on secundary SIM

We can enable the mobile data on the secondary SIM card during a VoLTE call, which means that during VoLTE calls, the Xiaomi smartphone is connected to the mobile data on the secondary SIM card to ensure stable network connection.

Android 10 (MIUI 11.0)
Step 1:  Open the  Settings
Step 2:  Tap on  SIM cards & mobile networks
Step 3:  Enable or disable  Use mobile data during VoLTE calls on the secondary SIM
Step 4:  Confirm with  OK
  1. Open the Settings
  2. Tap on SIM cards & mobile networks
  3. Enable or disable Use mobile data during VoLTE calls on the secondary SIM
  4. Confirm with OK

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