210 hrs are under laboratory testing, i.e. controlled environment. Different telco provider, on different frequency (GSM900/1800/WCDMA/etc), different location with different signal strength, etc. will drain more battery juice.
To get 210 hrs,
(1) fully charge the battery.
(2) take out your SIM card or set the phone to Offline.
(3) switch on and let it at your desk until it runs out of battery. Also ensure the environment is at 20-25°C with minimum humidity.
I tested with my previous N80, with SIM card and minimum usage as you stated above, last 3-4 days only. Without SIM card/Offline, it last me 7-9 days.
Recommendation:
(1) Disable wireless - Set wireless scanning = off
(2) Use GSM on default. If you need to browse/video call, then only set to 3G(UMTS) mode.
(3) Disable as much apps running in the background (press and hold Menu). Also uninstall those screensaver, etc.
BTW, for those who experience short battery life, do you mind to state whether your set is original/AP and also you
think your battery is original/AP.
The battery and phone is original.
As at 1200hrs battery still got one bar left (life is 4days 20hrs ++ ).
Will try the phone without any sim card after battery really dead and recharge.
Maybe can then try different sim card (digi maxis celcom) and see which telco consume most power.
Any1 want to ta pau me going out to lunch.
Will report back later.