i wonder why the cm rom is so small,if i wanna flash my phone, i should use the cm installer and should i need to do other thing? i' a new guy. i haven't experience about flash cm rom. thanks.
thanks a lot, but my mother language is not english, so some words i don't know like gig. and by the way i have experience about update my phone and root ,but i use the odin and recovery not the cm installer.Don't even THINK about flashing your phone until you have done more reading and understand things a bit more, otherwise its a disaster waiting to happen.
As for your question, the other gig of stuff is mostly rubbish/bloatware that a lot of people don't want on their phone.