Samsung How to Set Default SIM card for Mobile data
Samsung 3671
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Samsung devices use SIM card 1 for mobile data use by default. SIM card 2 can also be selected in the SIM card management. However, some Samsung devices only support fast LTE on SIM card 1.
Note: The default SIM card for mobile data can also be changed via the status bar.
Android 11 | One UI 3.0
- Tap on Settings
- Tap on Connections
- Tap on SIM card manager
- Tap on Mobile data
- Choose SIM 1 / 2 or OFF