Oppo How to Turn On/Off SIM cards
Oppo 521
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SIM cards can be activated or deactivated on the Oppo Smartphone independently of each other. For example, to be unreachable on a SIM card, it does not have to be forcibly removed from the device. To do this, it is sufficient to activate (or deactivate) the switch in the settings.
Android 11 | ColorOS 11.0
- Tap on Settings
- Tap on SIM card & mobile data
- Choose a SIM card (Dual SIM)
- Turn On/Off the SIM card
