Hi, Had the problem of my contacts disappearing on my Samsung Galaxy S i9000 four times, and got fed up of doing restores, so read up and found that if I used G-mail, they would always be backed up.... Problem was that my contacts were on my Android device, not my sim or anything else. So I backed up to a CSV file (backedup-contacts.csv) via the cable and the Samsung app "Kies", then imported into my G-mail, by logging into G-mail, clicking on the "G-mail" drop down list on top LHS of screen and selecting Contacts. Then within Contacts, clicking the "more" button at the top, and selecting "import", choose file, and selecting my "backedup-contacts.csv", and imported. This didn't work, as only some of the field came down! I then undid that within G-mail (It lets you roll back really easily!), and then did a backup to a .CSV file (google.csv) and looked at the format of the file - BINGO! It showed me all the file field names, and then was just a matter of copying the data in MS Excel (sorry LibreOffice - I'm more confident in Excel for stuff like this!) from my backedup-contacts.csv to google.csv, making sure it was all in line - (I added a contact called "a a" and filled every field with "aaa" or "111" to make sure they were all in line). Also make sure that your number columns are wide enough to display the numbers, otherwise Excel converts it to Scientific Notation, which you don't want. THE BRAVE BIT!!! - MAKE SURE YOU HAVE A GOOD AND TESTED BACKUP BEFORE YOU DO THIS BIT! I then deleted all my G-mail contacts on my computer and let it sync to my phone! I then deleted all my contacts on my phone too! I waited until the sync had finished, then switched my phone off. <GULP> I then restored from "google.csv" to my G-mail account, and switched my phone back on again. It then synced, the 550 contacts took a minute or so via my house's wifi. SUCCESS! All my contacts are there, BUT I've lost all the leading zeros... :hmpf: This was because Excel was trying to be clever, and treated them as numbers, which should not have preceding zeros! So the billion dollar question is how do I get them back, as there are various length numbers, some start with a "+" for international numbers and it's very very frustrating! I've Googled this, and lots of people have this problem, but most assume that their numbers are of a uniform length, so any suggestions.... Many thanks, Abisdad.