Nokia has launched a new promotion giving away a free Xpress-on color cover to U.S. Nokia Lumia 710 owners until the end of April. The promotion has in fact been running for a while and anyone who purchased a Lumia 710 between January 11, 2012, and April 30, 2012 is eligible.
The Xpress-on covers are offered in yellow, fuchsia, cyan, and white.
You will need to submit a completed online submission form as well, your original sales receipt showing purchase price and store and the 15-digit IMEI of your device, and the original UPC and barcode panel from the box (hopefully you kept it).
Read more: Nokia Xpress-on color cover promotion