save battery for s60 smatrphones

h i came to know very easy tip to save battery for s60 smatrphones
1. Go to tools-settings-phone settings-display, KEEP THE SENSOR FOR MINIMUM.
2. Go to tools-settings-phone settings-display, KEEP THE SENSOR POWER SAVER TIMEOUT FOR 1 MINUTE.
3. Go to tools-settings-phone settings-display, KEEP THE SLEEP MODE ON.
4.Go to tools-settings-phone settings-display, KEEP THE LIGHT TIME OUT FOR 5 SECONDS.
ITS VERY MUCH TRUE THAT YOU CAN SAVE YOUR BATTERY, MY N73 CAN WITHSTAND FOR 2&1/2 DAYS.
HIT THANKS IF YOU LIKE THIS POST, AND PLEASE SHARE SOME TIPS LIKE THIS.