Battery won't hold charge for more than 2 days on standby and is getting worse. It cannot be charged to 100% no matter how long the charger is left plugged in. Original standby battery life was over 6 days.
I had an LG U8110 for 6 months before I lost it. I had no problems with that phone, so I bought the LG U8120 based on the quality of LG's previous product. Unfortunately after 8 months the U8120's battery barely holds a charge and is getting progressively worse. The battery warranty is only 6 months, and a replacement genuine battery costs AU$50. For what it's worth, the older phone with a good battery had cells made in Korea. The dud cells were made in Japan.
Unlike other users, I have not experienced any microphone or firmware problems.
September 2005 - An update to my above post. The replacement battery (also made in Japan) now too has a standby life of less than 2 days. The battery is 75% discharged after just one day on standby.
The replacement battery is an official LG product. I will be sending in a warranty claim.
The phone SUCKS!
Did not switch on after a couple of months, I was told it was the software.
Had a new software put in, then a few weeks later it died again!
I will never buy an LG phone again!
I have had a LG phone (the u8110), and found the phone to be very easy to use, one of the best phones I've had.