An iPhone Air with a Transparent Back and SIM Slot? Nice, but there are compromises

The famous electronics market in Huaqiangbei, located in Shenzhen, continues to amaze with its ability to push enthusiasts beyond the construction limits imposed by the major manufacturers.

In a recent and detailed documentary published by YouTuber Linzin, viewers were able to witness a true micro-engineering feat: the transformation of an iPhone Air into a device with a completely transparent back and housing for a physical SIM slot.

iPhone Air, modder installs SIM slot and transparent back

The procedure to make the internal components visible required specific machinery. Using an ultra-precise laser, specialists removed the layer of paint behind the rear glass panel, taking care not to touch the MagSafe ring and the finishes of the camera housing.

This aesthetic alteration, however, mandated the removal of graphite thermal sheets, essential layers to dissipate heat generated by the processor and the battery along the surface of the chassis.

On the electronic side, the operation faced a decidedly arduous technical hurdle. The iPhone Air is designed as an exclusively eSIM-based terminal, completely lacking slots for traditional network SIM cards.

To bypass this barrier, the ultra-thin metal frame was subjected to machining with a numerically controlled milling machine, which literally carved out the space needed to accommodate a physical SIM tray. This was a particularly critical intervention, given the dangerous proximity of the antennas and the fragility of such a slim shell.

On the electronic side, the operators resorted to complex micro-soldering on the board, creating the logical connections necessary for the cellular system to recognize the new hardware module, with the only caveat being that the smartphone must be rebooted with every SIM change to force detection.

The insertion of the physical reader also imposed a significant spatial sacrifice. The original Apple haptic engine, characterized by a mass calibrated to deliver excellent vibrotactile feedback, was removed to make room for a more compact linear motor.

According to evaluations during testing, this alternative component can deliver only ninety percent of the original performance, inevitably diminishing the user experience of the smartphone.

The line between allure and fragility

The final result is a functional phone, capable of connecting to cellular networks and operating smoothly, but the price to pay for this exclusivity is very high. Stress tests highlighted significantly higher operating temperatures, a direct consequence of the absence of graphite sheets sacrificed for the transparent aesthetic.

The opening and milling have obviously voided any warranty coverage, permanently destroying the seals that ensured water resistance.

Long-term durability quickly manifested as the true weakness of the modification. During a normal transfer, the device actually suffered a microphone failure due to the loosening of a delicate flat cable, forcing the owner to ship the terminal back to China for a repair.