HTC is making it easier for Canadian consumers to finally step up to its premium HTC One smartphone with this trade-in and upgrade offer. The “One Phone, One Weekend, Premium Upgrade” promo started on May 23 and is going to last until May 27. You can get at least $100 and as much as $300 for your old qualified device. Just visit the HTC Trade Up site and enter the promo code “HTC100.” You will get a quote and shipping label to mail it. The promotion applies to all Canadian carriers selling the One—Bell, Rogers, SaskTel, TELUS, and Virgin Mobile.