Hi all,im living in Shenzhen now i applied S1 visa in Philippines but they only issued S2.

Divina, the consular officer decide which type and how long you will stay in China. It's impossible for you to change the type. Once you go to Shenzhen, you can extend your S2 type at least seven working days in advance before your current one expires. Or you may get out of China and apply for the S type again.