can go to 2gb, am using 1gb kingston now ...

Well, I bought a new 2GB Micro SD card for my phone. First, I moved all the stuff (applications, themes, games, etc.) I want to the phone memory. Then, I removed the old memory card and inserted the new one, copied all the stuff from the phone memory to the memory card. I think this should work for all the preloaded stuff except Sensor. You can give it a try. As for Opera Mini, you can get the latest version here. Just download the .jar file and copy it into your phone.

To earl-ku: I noticed that the earphones' sound quality isn't that good too. My suggestion to you is to make use of the equaliser. This slightly improves the sound quality of the earphone albeit not much. Or you can get a 2.5mm to 3.5mm converter and plug in your favourite earphones. But I notice that using the 3.5mm converter creates a bit of background noise.

PS: The method mentioned by hanissyazwan is that after unlocking the phone, press the so-called 'red' button which is used to ends calls. This will cause the backlight to slowly fadeaway.