Managing your SIM card settings is essential, especially if you are using a dual-SIM phone or need to temporarily disable a SIM for any reason.
These days, it’s easy to turn a SIM card on or off and it’s not different for the Samsung Galaxy S25, S25+ and S25 Ultra. If you have two SIM cards installed, you may want to switch between them for calls, texts, or mobile data.
Disabling a SIM when not in use can help conserve battery life. If you’re experiencing connectivity problems, turning a SIM off and then back on can help reset the connection. It can palso prevent unwanted calls and messages.
Watch: Enable Data Switching On Galaxy S25
Turn ON SIM Card
First, launch the Settings (⚙️) app on your Samsung Galaxy S25 or S25 Ultra. Select the Connections option and tap on SIM Manager.
You should see the SIM cards you have inserted into your S25. Choose the SIM Card you want to enable and toggle the switch ON.
From the pop-up, select Turn On to activate the SIM card.
Turn OFF SIM Card On Galaxy S25
To disable a SIM card, simply tap[ on the toggle next to it. From the prompt that comes up, select Turn OFF.
Take note that this will also disable any customizations that you can make on that SIM card, including Data Switching and preferences.
