A Chinese modder named Huaqiangbei installed a SIM card slot on an iPhone Air by removing Apple's Taptic Engine. The viral project, shared on Douyin and TikTok, replaces the haptic feedback motor with a smaller component to create space for a physical SIM tray, a feature Apple's original design lacks.

This hack highlights a key trade-off in modern smartphone design: the Taptic Engine provides essential haptic feedback for interactions but occupies internal volume. For users in regions where eSIM adoption is limited, a physical SIM slot remains a practical necessity, making this mod a notable workaround for a specific user need.

The modification's authenticity is debated, with some claiming it's a clone device rather than a genuine Apple product. Regardless, the project underscores consumer demand for physical SIM cards and the lengths some will go to customize hardware. Future iPhone designs may face similar scrutiny over feature trade-offs as components compete for space.