To add more cells into the database, you can download a Java applicaiton for your mobile phone. For now, only a J2ME application is available at 8motions


You can point directly your mobile browser at http://m.8motions.com. While the application works on most of MIDP2.0 phone, the integration with OpenCellID will only for SonyEricsson phones and an external bluetooth receiver..
Another client is Watchee, and here is the the direct download link. Enjoy!
More client will be availables soon...