Hiya guys
Many samsung phone users have this prob.
They cant install games which are more than 500 kb !
So here is the solution:
http://www.softpedia.com/get/Internet/Telephony-SMS-GSM/JADMaker.shtml
Download the above software and extract it
Then drag and drop the jar file u downloaded then u will get a jad file
Now copy paste em'  to your samsung phone
and click install on jad file !!
U are Done!!!