If your Safari browser is showing the “Debug Console” log you can turn it off by going to Settings / Safari / Developer / Turn Off Debug Console
Better Battery Life
If you treat the 3G network like WiFi you can greatly increase the battery life of your phone. When your not browsing the web or downloading documents turn the 3G off. Settings / General / Network / Turn 3G On/Off
Import Contacts From Sim Card
The easy way to import your contacts. Works with T-Mobile, Cingular & AT&T sims.
Settings / Mail Contacts & Calenders / Import Contacts From Sim