I don't think anyone chooses iOS because it's on version 13 versus Android's version 10.
Users generally choose the phone, not the OS. And the most popular phones are pretty close on the numbering schemes.
Another example is SSL and TLS. SSL 3.0 was the last version, then TLS 1.0 took over, but a lot of people still thought SSL 3.0 was the latest and best.
Users generally choose the phone, not the OS. And the most popular phones are pretty close on the numbering schemes.
Another example is SSL and TLS. SSL 3.0 was the last version, then TLS 1.0 took over, but a lot of people still thought SSL 3.0 was the latest and best.