Nokia 5130xm and Reliance problem.

Hello Everyone,

I own a Nokia 5130XM phone and Reliance lifetime prepaid. When I connect to the net using rcomwap and the default Opera Mini browser, everything works perfectly. But, if I try the same for some downloaded browser such as UCweb or Bolt, it does not even connect. Same prob with any downloaded Java application . It works with Netconnect though.

What I can't understand is if the Default browser can run so seamlessly, why not the other browsers?

Also, is there anyway to replace the Default Opera Mini with another browser?

Thanks.