A dual-SIM setup lets you use one phone to make and receive calls and texts from two numbers. It's also super convenient and can save you serious cash when traveling. We show you how to use two SIMs ...
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Using an old SIM card for years? Your smartphone may be malfunctioning. Do these things immediately and see surprising benefits.
SIM: If your smartphone has a SIM card that's years old and you've never felt the need to replace it, it's time to be cautious. Telecom companies periodically upgrade their network systems. New SIM ...
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