I just bought a brand new blackberry curve 4,the batterry it came with couldn,t even last me up to 5hours,I had †̥ buy another new battery(5 000),now the same problem still pesists.Please what can be done because am not really enjoyin the phone oooo

Curve 4's only come with a 1000 mah battery, as you have realised that would not last long @ all.
Since you now have two batteries, charge both and always leave home with them, not also forgetting your ac charger and if you drive, a car charger or try some of those chinko exxtended batteries, they are 2200 mah.

I have only 1 battery for mine , and it lasts me the whole day , although I have to charge at night , just like most smartphones.
It all depends on how you manage your power

Check this thread for tips

www.nairaland.com/957311/curve-4-always-hot