A Chinese user managed to install a SIM card tray on an iPhone Air by embracing a hardware trade-off. Here are the details.

Technicians in Shenzhen’s Huaqiangbei electronics market district have modified Apple’s iPhone Air to support a physical SIM ...

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What is a SIM card used for? A SIM card, or a subscriber identity module/subscriber identification module, is a tiny memory card that contains unique information and is linked to a particular network ...