It's a bit like bolting the stable door after the horse has gone, but backing up your phone is just basic, with all the capabilities and content on a modern smart phone ! I use Ovi Suite to sync my contacts and messages at least twice per week, and my Ovi account to back up Contacts , Calendar and notes a couple of times a month OTA. I only do a full backup every couple of months as settings can cause conflict with software updates, as by there nature, they change the operating system and so updates are often more 'buggy' if you use old settings. I've posted BACK UP YOUR PHONE, a few times, but unfortunately people still 'hope for the best' and don't bother, all Nokia computer software advises a backup before updating.
Also a soft reset before a software update gives a 'cleaner' install, and results in a better experience with the new software on your phone.
So, have Ovi Suite and Nokia Software Updater on your computer, keep your micro usb cable handy, and sync a couple of times per week.
