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iPhone OS 1
open-in-new
<p>iPhone OS 1 is the <a href="/facts/IOS_version_history/4CILLmV7">first</a> major release of <a href="/facts/IOS/mK5cggH5">iOS</a> <a href="/facts/Mobile_operating_system/wysBVca1">Mobile operating system</a>, developed by <a href="/facts/Apple_Inc./oTJYta3k">Apple Inc.</a> It was released on June 29, 2007 along with the <a href="/facts/IPhone_2G/xwVatAHK">first-generation iPhone</a>. It was succeeded by <a href="/facts/IPhone_OS_2/bLx8GFA9">iPhone OS 2</a> on July 11, 2008. </p>