If you have a dual SIM phone and only want to use one SIM, you can easily disable the other one using the built-in feature.
Here's how to enable/disable SIM cards on Obi Worldphone S507:
Step 1: Go to Settings.
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Step 2: Select the SIM card.
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Step 3: Choose the SIM card you want to disable.
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Wishing you all the best.
