I have a HTC Ozone phone.I am looking for a backup solution for my personal data on my phone. Can anyone suggest a tried and tested backup service for windows mobile?

I'd recommend using My Phone, a free backup service from Microsoft, specifically designed for Windows Mobile devices like your HTC Ozone. It allows you to automatically back up your contacts, calendar, tasks, text messages, and play among us other data to a secure online storage space. You can also use it to sync your data across multiple devices and access your backed-up data from any web browser.