Guys, I found this from the e71 topic. Credit to davidmak
QUOTE
Guys, I think I found the solution to our battery problems. I found information from another forum:
Garmin Mobile XT version 5.00.20
Change History:
Changes made from version 5.00.10 to 5.00.20:
Update the subcategories listed for City Navigator Europe 2009 maps.
Correct various out of memory conditions that can occur.
Correct the processing of a received Location Message to not save the point on the Recent Finds list.
Correct the processing of received text messages to not close the GMXT application when a text message is received without a subject.
Correct an error that occurs when a headset is plugged into some devices.
Correct the use of the directional pad for movement between hyperlinks within Flight Status.
Correct saving and editing waypoints with non-English characters.
Tips On 5.00.xx
Delete CardRunner.dll from sys\bin will save ~20% standby battery power, if you don't want to use location message.
Happy enjoying your Nokia E71. Finally....
I did give it a test and YES IT DID SAVE UP MORE BATTERY POWER!!

. Able to extend the battery performance to 2 1/2 days with 20 minutes++ talk time, 30++ SMS, 1 hour++ on Radio, 1 hour++ on Gaming, 40 minutes++ on GPS, 4 hours++ trying to install CorePlayer yet fail

and the rest on standby mode

.
Btw, anyone know how to get the ahem version of CorePlayer for e66 base on the newest firmware. This latest firmware is really killing me off

. ROAR, so many ahem stuffs cannot install

.
Also, any good pouch to get for this phone? The one come in the package can't provide much protection especially the top and the side area. I don't want my leng phone to get scratch

.