eli5, How do phones upgrade their IOS

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Imagine someone opens a box with a new iPhone 12 inside. Out of box it came with iOS 14. When the phone gets upgraded to the latest software, does it automatically gets updated to the latest one, or will the software get upgraded incrementally (14 to 15 then to 16…..)?

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5 Answers

Anonymous 0 Comments

Technically this depends on the OS design. Typically it’s done incrementally because you have to test each upgrade path to make sure it works and it’s much more complex to try to be able to “skip” versions.

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