Absolutely! Thanks to the magic of Dual SIM technology, you can easily use your SouthESIM alongside your existing physical SIM card. We often suggest keeping your home SIM active for receiving important calls or SMS, like those pesky two-factor authentication codes from your bank. You can then set your SouthESIM as your primary line for all your mobile data needs while traveling, ensuring you get affordable internet in places like Vietnam or Brazil without missing important messages on your home number.
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Can I keep my existing physical SIM card active while using a SouthESIM?
Updated April 22, 2026
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