No, Samsung is the only manufacturer Apple relies on ARM chips. Apple initially used PortalPlayer's ARM chips in earlier iPod, but switched to Samsung's custom ARM based SOC's since 2006. Samsung collaborated with Intrinsity go beyond 1Ghz in 2010. No, there is absolutely no need to go 64bit on mobile ends. It makes sense however for Samsung to develop 64bit since they already make laptops powered by ARM chips. No, you absolutely have no idea what you are talking about.