Nokia :: 2730 Does Not Allow To Use Socket Connection

I recently bought a Nokia 2730 Classic, but I am not able to browse internet on this phone through the Socket connection, like how the other Nokia 2330 Classic can do.For the Nokia 2330 Classic, I need just put the SIM into it and start the phone, then go to the configuration and just select Internet APN as the Access Point and the phone will work fine with Opera Mini and other Java applications like Ebuddy, Bolt Browser etc through "socket" connection", without the need to request the internet settings from my operator through SMS.
But in the Nokia 2730 Classic when I put the same SIM into this phone and Select the same Internet APN as the Access point, I am not able to browse the internet on Opera Mini and I have to send SMS to my operator to get the settings.

The main problem here is that even after saving the internet Settings of my operator on the Nokia 2730 Classic, the internet does not work on in the Socket Connection, hence Opera Mini 4.2 and 5.1 (and other java applications which need the socket connection) will not install or work. (although the internet will work on the default browser of the phone)I am also able to connect the Nokia 2730 Classic to the computer and browse the internet through Data Cable / Bluetooth normally.I tried with another operator using an internet data plan, but got the same results.

Can someone please tell me how to adjust the settings correctly so that the Nokia 2730 will work on the Socket connection so that I can browse on Opera Mini 5.1 and 4.2 and other Java browsers and applications which work only on the Socket connection?Another strange issue is that after trying to use the internet on the Nokia 2730 (without any positive results), when I put the same SIM back into the Nokia 2330, the internet does not work for some hours on the socket connection and I have to use the http connection till then. Quite strange.