hi guys. i want to ask. if im using iPhone, and do not plan to use iValue plan or whatever, instead i want to use the mobile internet rm8/day is it worth it? and what is the difference between mobile internet and prepaid broadband? prepaid broadband is cheaper rm3/day.

plus,anyone can enlighten me about the usage. let say i bought 1gb/month package via mobile internet. how do they calculate our data usage? i mean, do we need to switch off 3G after internet use or i can use facebook 24/7 on the go without worrying data usage? if use Yahoo Messenger on iPhone on a daily basis, exactly how many data is being used?