Barn Doors already open.
Over eight years (two year carrier contracts) I've had a "windows" phone from HP, HTC, LG, and Samsung. I kept buying into the "new and improved" marketing with every new release but each was terrible to use for anything particularly to make a phone call from contacts. When Samsung offered the Galaxy Nexus I was ready and never looked back followed by the S3 and now the Note 4 each better than the last which wasn't the case for Windows Mobile/Phone. The latest Windows Phones are competitive with all the major developers providing aps but me and many millions of others plan to never go back to a Windows Phone after experiencing eight years of hellish products. If I were Samsung I'd tell Microsoft to go take a hike if they are not going to dismiss the past licensing claims AND pay for Samsung's R&D cost to develope a Windows Phone.