No, Microsoft doesn’t ‘need’ to make an Android phone “Google has pushed very significant pieces of functionality into GMS, including messaging and the Chrome browser,” Bright writes. “The AOSP counterparts are buggy, feature deprived, and by at least some accounts, barely maintained. If a company wants to use AOSP without GMS, it has a lot of work to do if it wants to produce a high quality experience. The open source parts just aren’t good enough.” +1 also building custom roms/trying them etc. all the time is okay for some, but not feasible for other users, who just want the damn things to work flawlessly.