Methodology
Published scores
Scores apply only to the exact product model named. iFixit uses a versioned 0–10 rubric. French repairability and durability indices are separate manufacturer-declared 0–10 measures. These systems and their product categories cannot be combined into one ranking. Scored profiles link directly to the published source and identify the relevant rubric or calculation date.
Comparison factors
Every profile presents replacement parts, repair documentation and a model-specific wear or access factor. Details identify adhesives, fasteners, software pairing, service support or part compatibility when they change the repair decision.
Evidence
Profiles and guides synthesize the linked manufacturer documents and independent repair references. Drafts used AI assistance; claims were checked against the cited sources. No hands-on product testing was performed.
Current availability
Parts stock, prices and service options vary by market. Check availability with the seller or repair provider.