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1997: EPOC32 1.0
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2001: Symbian OS 6.0
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2002: Symbian OS 6.1 (Symbian S60 y Symbian S60 FP1)
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2003: Symbian OS 7.0 (Symbian S60 2nd Edition)
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2004: Symbian OS 7.0 (Symbian S60 2nd Edition FP1) - Symbian OS 8.0 (Symbian S60 2nd Edition FP2)
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2005: Symbian OS 8.1 (Symbian S60 2nd Edition FP3)
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2006: Symbian OS 9.1 (Symbian S60 3rd Edition)
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2007: Symbian OS 9.2 (Symbian S60 3rd Edition FP1)
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2008: Symbian OS 9.3 (Symbian S60 3rd Edition FP2) - Symbian OS 9.4 (Symbian S60 5th EditioN
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2010: Symbian OS 9.5 (Symbian^3)
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2011: Symbian OS 9.5 (Symbian Anna)
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2012: Symbian OS 10.1 (Nokia Belle) - (Nokia Belle FP1) - (Nokia Belle Refresh) - (Nokia Belle FP2)
