Incident: Samsung Galaxy Fold Durability Test Failure at 120,000 Folds

Published Date: 2019-10-04

Postmortem Analysis
Timeline 1. The software failure incident happened on October 3, 2019. [90604]
System 1. Samsung Galaxy Fold 2. Foldable screen 3. Hinge mechanism [90604]
Responsible Organization unknown
Impacted Organization 1. Consumers [90604] 2. Samsung [90604]
Software Causes unknown
Non-software Causes 1. Physical durability issues with the Galaxy Fold's hinge and screen [90604].
Impacts 1. The software failure incident in the Galaxy Fold resulted in the device failing at around 120,000 folds during a durability test, with issues such as "pixel blob" and "deteriorated hinge action" [90604].
Preventions 1. Implementing more rigorous testing procedures during the development phase to identify and address potential issues with the foldable screen's durability [90604]. 2. Conducting thorough quality assurance checks to ensure that the device can withstand the expected number of folds over its intended lifespan [90604]. 3. Enhancing the design and construction of the hinge mechanism to prevent deterioration and damage during regular use [90604].
Fixes unknown
References 1. SquareTrade 2. CNET's in-depth review by Jessica Dolcourt 3. Livestreamed test conducted by CNET 4. Samsung's official statements and product information

Software Taxonomy of Faults

Category Option Rationale
Recurring unknown The article does not mention any specific software failure incident related to the Galaxy Fold durability test conducted by CNET and SquareTrade. Therefore, it is unknown whether a similar incident has happened before within the same organization (Samsung) or with its products and services, or at other organizations.
Phase (Design/Operation) design, operation (a) The software failure incident related to the design phase can be seen in the article where it mentions that Samsung's foldable phone, the Galaxy Fold, had key design changes and a more durable construction when it was released on Sept. 27. Despite these changes, the device failed at around 120,000 folds during a durability test conducted by SquareTrade, showing issues like "pixel blob" and "deteriorated hinge action" [90604]. (b) The software failure incident related to the operation phase is evident in the article where it describes the livestreamed durability test of the Galaxy Fold. The test, which aimed to mimic the number of times a person would open and close the Fold over five years of use, had to be ended prematurely at around 119,380 folds due to the hinge being damaged and half the screen blacked out. This indicates a failure during the operation or use of the device [90604].
Boundary (Internal/External) within_system (a) within_system: The software failure incident related to the Samsung Galaxy Fold's durability test can be categorized as within_system. The failure occurred during the durability test conducted by CNET and SquareTrade, where the Galaxy Fold failed at around 120,000 folds due to issues such as "pixel blob" and "deteriorated hinge action" [90604]. This failure was a result of the device's internal components and design not being able to withstand the stress of repeated folding, indicating an issue originating from within the system itself.
Nature (Human/Non-human) non-human_actions (a) The software failure incident in this case is related to non-human_actions. The failure occurred during a durability test of Samsung's Galaxy Fold conducted by SquareTrade using a machine that repeatedly opened and closed the device. The test aimed to simulate the number of times a person would open and close the Fold over five years of use. The device failed at around 120,000 folds during the test, showing issues such as "pixel blob" and "deteriorated hinge action" [90604].
Dimension (Hardware/Software) hardware (a) The software failure incident in this case is more related to hardware issues rather than software. The article mentions that the Galaxy Fold failed during a durability test conducted by SquareTrade after around 120,000 folds, showing issues like "pixel blob" and "deteriorated hinge action" [90604]. This indicates that the failure was primarily due to hardware components not being able to withstand the stress of repeated folding, rather than a software glitch or bug.
Objective (Malicious/Non-malicious) non-malicious (a) The software failure incident in this case is non-malicious. The failure occurred during a durability test of Samsung's Galaxy Fold conducted by CNET and SquareTrade. The test involved repeatedly opening and closing the device to simulate real-world usage. The device failed at around 120,000 folds, showing issues such as "pixel blob" and "deteriorated hinge action" [90604]. The failure was not due to malicious intent but rather a result of the stress placed on the device during the test.
Intent (Poor/Accidental Decisions) unknown The articles do not mention any software failure incident related to poor decisions or accidental decisions.
Capability (Incompetence/Accidental) development_incompetence Development incompetence: The software failure incident related to the Samsung Galaxy Fold's durability test can be attributed to development incompetence. The incident occurred during a livestreamed test where the Galaxy Fold was being folded and unfolded repeatedly to test its durability. The test was planned to simulate 200,000 folds, equivalent to five years of use, but had to be stopped at around 120,000 folds due to the hinge being damaged and half the screen blacking out. This failure highlights potential issues with the device's design and construction, indicating a lack of professional competence in ensuring the durability of the foldable screen [90604]. Accidental: The software failure incident related to the Samsung Galaxy Fold's durability test does not seem to be primarily attributed to accidental factors. The failure during the test, where the device's hinge was damaged and the screen blacked out after around 120,000 folds, was a result of the planned stress test to assess the device's durability. The incident was not described as an accidental occurrence but rather a planned test that revealed issues with the device's design and construction [90604].
Duration temporary The software failure incident related to the Samsung Galaxy Fold's durability test can be categorized as a temporary failure. The incident occurred during the durability test conducted by CNET and SquareTrade, where the Galaxy Fold failed at around 120,000 folds due to issues such as "pixel blob" and "deteriorated hinge action" [90604]. This failure was a result of the specific circumstances of the test, such as continuous folding and unfolding, rather than a permanent failure affecting the device under normal usage conditions.
Behaviour crash, other (a) crash: The software failure incident in this case can be categorized as a crash. The Galaxy Fold's software failed as a result of the device's hinge being damaged and half the screen blacking out after around 120,000 folds during the durability test [90604]. (b) omission: There is no specific mention of the software failing to perform its intended functions at an instance(s) in the provided article. (c) timing: The software failure incident is not related to the system performing its intended functions too late or too early. (d) value: The software failure incident is not related to the system performing its intended functions incorrectly. (e) byzantine: The software failure incident is not related to the system behaving erroneously with inconsistent responses and interactions. (f) other: The software failure incident involved the system failing due to physical damage to the device's hinge and half the screen blacking out during the durability test, which is not covered by the options provided.

IoT System Layer

Layer Option Rationale
Perception None None
Communication None None
Application None None

Other Details

Category Option Rationale
Consequence property, non-human The consequence of the software failure incident in the provided article is related to option (d) property. The software failure incident resulted in the Galaxy Fold device experiencing issues such as a damaged hinge and half of the screen blacking out after around 120,000 folds during a durability test conducted by CNET and SquareTrade [90604].
Domain information (a) The failed system in this incident was related to the information industry as it involved testing the durability of Samsung's Galaxy Fold, a foldable phone with a unique screen feature [90604].

Sources

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