Q: What is the difference between versions 1.0+, 2.0+ and 3.0+?

A: 1.0 is search only, 2.0 supports download, and 3.0 supports download/upload, aka "two way sync."

± The Kyocera Phantom does not support Email addresses to be downloaded into the phone or native native phonebook adds to be uploaded to iPhonebook. Additionally, this phone model only allows one phone number per contact. Contacts with multiple phone numbers are split into multiple contact records on the phone.

‡ These phones treat capacity by fields not records. Therefore, a contact with 4 numbers and an Email address is treated as 5 towards the capacity limit even if some of the records are unfilled.

†† Certain version of this phone model only have a capacity of 200 contacts.

‡‡ This phone only allows one phone number per contact. Contacts with multiple phone numbers are split up into multiple records on the phone.