turn on suggestions
Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.
To remedy the battery situation, have a look at this article and make use of as many of the tips as possible:
www.blackberry.com/btsc/KB14320 .
To resolve the freezing, make sure to do regular battery pulls. To do that, remove your battery while your phone is powered on then replace it.
I hope my suggestions help you. 
