Apple successfully upgrades a huge majority of all their phones in the field, and nearly all of those users are barely even aware of it. They plug their phone in at night, sometimes in the morning there's a message about a new version. Maybe they notice their phone is slow for a day or two, likely they don't. No major incidents involving mass-bricking of phones, no rollbacks, no data loss... arguably the most successful update system in the history of technology.
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Apple successfully upgrades a huge majority of all their phones in the field, and nearly all of those users are barely even aware of it. They plug their phone in at night, sometimes in the morning there's a message about a new version. Maybe they notice their phone is slow for a day or two, likely they don't. No major incidents involving mass-bricking of phones, no rollbacks, no data loss... arguably the most successful update system in the history of technology.