You need a Flickr account and perhaps some of your own photos you want to share from your device or your PC. You use your Yahoo! ID to log in to Flickr at http://m.flickr.com/. Add Flickr to your phone’s bookmarks for one-click access anytime.
Note that although Flickr screen names and Yahoo! account names can be different, both names are tied to the same account.
Once you sign up for Flickr, you will also have a special e-mail address for sending photos to Flickr from your device. To find this address, open http://m.flickr.com on your device and choose Upload a photo. Scroll to the address. On some devices, you can simply choose the address to create a new e-mail to which you can attach an image on the device or the device's memory card.
Use of Flickr might depend on your carrier and its charging structure.