It would be nice if gnome-phone-manager could some day download all SMS messages from a phone, store them on the computer, and then later upload them to a phone. This would be helpful when migrating from an old phone to a new one. Phone numbers can be transferred with SIM card so up/downloading them is not that necessary but that would be nice feature, too. Nokia PC Suite can do this and xgnokii also seems to capable of doing that.
Please file RFE bugs upstream. In this particular case, the functionality would probably overlap with the PIM data syncing, so it should be possible to do...
Ok, will do, no problem. Filed as http://bugzilla.gnome.org/show_bug.cgi?id=579875