Android Marshmallow: The pivotal update that finally gave users control over their data

Cultures · Published 10 October 2026 Swipe more like this →

In short: Released in 2015, Android Marshmallow was a quiet revolution in mobile usability. It introduced the opt-in permission system we take for granted today, alongside clever power-saving modes and the ability to adopt SD cards as internal storage. It remains a landmark moment in Google's effort to refine the smartphone experience.

Before Android Marshmallow, installing an application meant granting it a blanket set of permissions, often without the user knowing exactly what data was being accessed. Marshmallow fundamentally shifted this power dynamic by introducing an opt-in architecture. Instead of an all-or-nothing approach, users were prompted to grant specific permissions—such as camera or microphone access—only when an app actually required them. While this model initially applied only to apps built with the Marshmallow software development kit, it set a new standard for privacy and user agency on mobile devices.

Beyond privacy, the update addressed the perennial struggle of battery life and storage management. The 'Doze' and 'App Standby' features introduced sophisticated power management, restricting background activity and network access when a device was inactive or not being physically handled. Simultaneously, the 'Adoptable storage' feature allowed users to designate external SD cards as internal storage. This reformatted the card with an encrypted file system, effectively merging it with the device's primary partition. However, this feature was not universally adopted; manufacturers like Samsung and LG opted out, citing concerns over potential data loss and user confusion.

Marshmallow also laid the groundwork for modern hardware integration and contextual computing. It provided native support for fingerprint recognition, allowing for secure authentication across the OS and third-party apps, and added support for USB-C connectors. The 'Now on Tap' feature utilized new APIs to provide context-sensitive search results based on what was currently displayed on the screen. Despite these advancements, the operating system saw a slow adoption rate, peaking at 35.21% of devices by August 2017. By January 2026, that figure had dwindled to 1.62%, marking the end of an era for this influential version of the Android platform.

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