I have an iPhone 4 with my 12th gen ULF. I had an iPhone 3GS before this. My Mom has an iPhone 4 with her 5th gen ULF. All have successfully transferred contacts to the ULFs.

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SOLD
2000 E38 750iL Highline Edition, Upgraded with the lastest 2006 X5 Electronics
MKIV Navigation, 16:9 Display, Bluetooth, TV/Video with Backup Camera, Sirius, and Aux Input