1. First of all, you will require Winrar or some other freeware software which opens rar files.
2. Right on the java app you have on your comp and open with Winrar.
3. You will see a folder named META-INF. Open this folder and you will have a file called MANIFEST.MF.
4. Double click on the file and open with notepad.
5. Save the file on your desktop as MANIFEST.MF
6. Open the MANIFEST.MF file on your desktop and add the following lines below the existing lines.
LGE-MIDlet-Height:400
LGE-MIDlet-Width: 240
LGE-MIDlet-Indicator: HIDE
7. Save the file and drag it into the jar file opened with winrar. Close winrar and transfer the jar file to the phone.
