Improve a PPC iPaq rw6815
 

Hi, I own a PPC HP iPaq rw6815. It doesn't have too much coverage, so I have problems with that in my house; I also prefer to have a keyboard in order to type SMS in the street. Main use is in the office as an agenda. I am considering to move to Blackberry, what do you think? Would the movement improve my coverage? what about the agendas sw in the BB? Thanks a lot