It is unclear what you are asking for with “when does ios 2.”

Possible meanings

• If you mean “When was iPhone OS 2 (the old ‘iOS 2’) released?”, it came out on July 11, 2008, alongside the iPhone 3G.

• If you mean something else (for example “when does iOS 26 beta 2 come out” or “when does iOS 2 support end”), please rephrase the question with the full version name and what exactly you want to know (release date, end of support, etc.).