To help make the HTC One their most successful device to date, HTC introduced a ‘trade-in’ programon their website. HTC is offering a $100 Visa gift card or the trade-in value of your old phone if you purchase the new One. After buying it, send in your old phone with proof of purchase for a One, and then wait for the refund. Sign up for it over here. Unfortunately, the offer is just valid in US for now, though we hope HTC will introduce it in other countries as well.
Are you planning to buy the new HTC One and send in your old Nexus One or Samsung Galaxy S? Tell us about it in the comment box below.