SO

Events

1973
Approx. 1996 - Approx. 2004
Approx. April 19, 2000 - 2002
2003 - 2005
Approx. 2005
2005 - 2008
January 1, 2007 - 2019
2008 - 2019
2008 - 2010
2010

Evolucion de los SO Moviles