I bought it, I'm stuck with it for 2 years now. Here are my impressions and notes on how to get the most from an LG cu500
Good Camera
Video & Picture messaging
Responsive UI
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HSP
HFP
DUN
OPP
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A2DP
AVRC
Micro SD Memory card slot
MP3 Player &
MP3 Ringtones (& WMA AAC, AAC+)
Speakerphone
HSPDA (If you're willing to pay around ~$50 / mo extra for it!)
No voice dialing!
The 2.5mm jack does not support stereo as far as I can tell (If you want to listen to stereo music, you need a Bluetooth A2DP stereo device to pair with it)
Bluetooth is only v1.1
Some reports indicate that only SanDisk memory cards work
The memory card slot is behind the battery - so you have to power down, remove battery, swap card, replace battery, power up just to change memory cards.
Cingular either neglected or intentionally excluded the software to sync the phone with the PC
Syncing over Bluetooth doesn't appear to work well without a memory card installed
Again, Cingular either neglected or intentionally excluded the software to sync the phone with the PC. However the same phone tweaked for another market (Australia) & carrier does provide the software, which works perfectly with the cu500.
Get a properly working data cable - many of the cheapo ebay/amazon cables do not work properly even if they explicitly say so
Get & Install the software
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Click on the picture of the TU500 Phone
Click the Manuals & Software tab
Right click TU500.zip and “Save Target As”