Do I lose the SIM contacts stored on the disabled card?

No. Contacts saved directly on the SIM stay on the card and reappear once it is switched back on through the same SIM & network menu.

Does disabling a SIM change my default SIM for mobile data?

Yes. Data and SMS priorities move automatically to the remaining active SIM, so double-check the default settings under SIM & network after re-enabling the second card.

Can I re-enable the SIM without restarting the phone?

Yes. Going back to Wi-Fi & network ➔ SIM & network and confirming the toggle with OK reactivates the card immediately, no restart needed.

OnePlus

OnePlus: Turn a SIM Card On or Off

On a Dual SIM OnePlus phone, one line sometimes needs to be shut off completely instead of just switched to the background. Turning off a SIM card stops it from receiving calls and texts right away, while mobile data and messaging priorities move automatically to the remaining card. This is useful when a second line sits unused for a while but should not be removed from the tray.

Updated: 07.08.20265 min6 steps

VersionAndroid 10 · Oxygenos 10

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OnePlus

Enable or Disable a SIM Card auf OnePlus

Deactivating a SIM card on a Dual SIM OnePlus phone blocks that line from calls, texts, and mobile data immediately, without pulling the physical tray.

OxygenOS handles this through a software toggle per SIM slot, separate from Airplane mode. Once a card is disabled, any priorities set for mobile data or sending SMS shift automatically to the remaining active SIM. No calls or messages reach the disabled card until it is switched back on.

Menu path

Settings ➔ Wi-Fi & network ➔ SIM & network ➔ choose the SIM card ➔ Enable or disable the SIM card ➔ confirm with OK.

Use this when a second line is temporarily unused, when a SIM is being replaced, or when battery drain from an idle second network connection needs to stop. If the goal is only to silence notifications for one line rather than block it entirely, adjusting the notification settings for that SIM is a better fit than disabling it.

Frequently asked questions

No. While a SIM is turned off through SIM & network, calls to that number are not routed to the device at all, so no missed call entries appear. They only show up again once the SIM is enabled and back on the network.

Compatible devices

Tap your device — opens its hub with matching guides.

Android 10 · Oxygenos 10

OnePlus 7T Pro 5G McLaren OnePlus 8 OnePlus 8 Pro OnePlus N10 OnePlus Nord OnePlus Nord N100

Network & Connectivity

OnePlus: Turn a SIM Card On or Off

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Enable or Disable a SIM Card auf OnePlus

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