165. iOS version distribution

Some errors on iPhone apps could happen due to users don’t upgrade their iOS (iPhone’s operating system). Further more, some functionality we plan to use in our app could even be unavailable to them.

👉 In this exercise let’s figure out what’s the oldest iOS version Bindle iPhone users have.

iOS uses semantic versioning which has the following format: MAJOR.MINOR.PATCH. For example: 12.1.2. The newer version would be 12.3.1 and the older version is 11.9.0.

⚠ Provide the full version as an answer, for example 12.1.1.

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Anatoli Makarevich, author of SQL Habit About SQL Habit

Hi, it’s Anatoli, the author of SQL Habit. 👋

SQL Habit is a course (or, as some of the students say, “business simulator”). It’s based on a story of a fictional startup called Bindle. You’ll play a role of their Data Analyst 📊 and solve real-life challenges from Business, Marketing, and Product Management.

SQL Habit course is made of bite-sized lessons and exercises (you’re looking at one atm). They always have a real-life setting and detailed explanations. You can immediately apply everything you’ve learned at work. 🚀

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