Here's step by step how installing application (*.sis) file to your s60 phone's

1. Use Bluetooth, infrared file transfer, or a USB connection to copy the .sis file to your phone. If you do not have access to either, send the file to your phone as an e-mail attachment.
2. Open your phone's inbox and select the .sis file you just transferred. This should start the installation. Some phones come with PC software to handle installations, you may of course also use this. some of s60 phone's (N-7650, N-3650, N-3660, N-Ngage) doesnt have File manager to manage the file installation. u need installing File manager Before, like as FExplorer or X-Plorer.

How to installing FExplorer?

1. If your FExplorer is in sis format u can follow step 1 and 2 on top
2. If your phone doesnt have connection, u need extract sis file to application file by unmakesis software.
3. Copy file extraction (include directory)  to your MMC using Card Reader to directory E:\System\apps\

If your phone has very little free memory left, you will likely get an out-of-memory message during installation.
Try removing unnecessary files from your phone. If you have already received the message "Saving file to Installer", you can safely delete the Opera .sis file from your inbox, which should free enough memory to finish the installation.

Tip: Installing to a memory card is recommended, as it will leave more memory for other applications.

Labels: Tip and Trick