M4 MacBook Air Teardown: Still Hard to Fix
An iFixit teardown of the new M4 MacBook Air confirms its AI acceleration hardware is impressive but difficult to access. The device received low marks for repairability, with heavy use of adhesives and paired components making battery and keyboard replacements "technician-hostile."
The M4 chip, built on a second-generation 3-nanometer process, packs 28 billion transistors, a 12% increase over the M3. Its 16-core Neural Engine is capable of 38 trillion operations per second, doubling the M3's AI processing capability. iFixit's teardown awarded the M4 MacBook Air a provisional 5/10 for repairability. While ports are modular and the battery is accessible, the soldered-down storage and fused keyboard present significant repair challenges. A major frustration is Apple's continued use of software locks, or "parts pairing." Swapping a display between two identical M4 Airs can disable features like True Tone unless calibrated by Apple's System Configuration tool, a hurdle for independent repair. This practice runs counter to the growing "Right to Repair" movement, which has seen legislation passed in several states, including Oregon's ban on parts pairing. Despite launching a Self Service Repair program and supporting some federal legislation, Apple's hardware designs often lag behind these initiatives. The Self Service Repair program offers genuine parts, tools, and manuals for recent iPhone and Mac models. However, the process requires a device's serial number to order parts, restricting the bulk purchase of components by independent repair shops. While the M4 Air's design is largely unchanged from the M2 and M3 models, it misses an opportunity to incorporate repair-friendly improvements seen in recent iPhones, such as electrically releasing adhesive for batteries.
