Phones that support iOS 2 (originally called iPhone OS 2) include the iPhone and iPod Touch models available at the time of its release in 2008. Specifically:

• iPhone (original iPhone)
• iPhone 3G
• iPod Touch (models available at that time)

iOS 2 was released alongside the iPhone 3G and introduced major features such as the App Store. It was a free update for the original iPhone and a paid update for iPod Touch at that time.

For clarity, iOS 2 is an extremely old version of iOS from 2008, so only the earliest iPhone and iPod Touch models support it, unlike modern iPhones which run recent iOS versions like iOS 26.