I have purchased BB curve 9320 4 month before look wise this phone is good but I am not happy with BB phones now a days this time of Android & Windows mobiles they all have latest software eg Blackberry curve is not suitable for office suite Excel files opens but you cant’ filter them but it is not with Androids & Windows phones.
Apps are not working without BB plans which are to costly as compared to normal plans for the example you get 1 GB 3G data by 250 Rs. but BB plans starts from 399 Rs. & the speed is of only 2G, you can only use surfing with normal data plans but you cants access any apps like whats app & others.
Battery back up is about full day if you are a moderate user. At last, my suggestion is not to buy BB phones.
Instead, you can buy Android or Windows mobiles.