Help Samsung galaxy portal

[Focus49]

Hi, I've had my smartphone for 12months and have never had any trouble with downloading apps until now, actually it's not the downloading that appears to be the problem but getting the phone to install certain apps. can anyone advise me? Would updating software help?
Waiting in anticipation!!!

 

[XplosiV]

Can you be more specific about your problem? Is your phones memory full? Do you get an error message? If so what?