This document summarizes the acquisition of Nokia's phone business by Microsoft in 3 main points: 1) Microsoft paid $5 billion for Nokia's devices unit and $2.18 billion to license Nokia's patents, in an attempt to strengthen its Windows ecosystem against competitors like Android and iOS. 2) The acquisition marks the failure of both companies to gain traction in the mobile market, with Nokia unable to transition from Symbian and Windows Phone not growing under Microsoft. 3) The deal splits Nokia into two - a networking equipment company and a patents/IP licensing company - and provides renewed hope but slim chances of success for Microsoft's mobile ecosystem, while leaving Nokia with a more focused business after a difficult period