New Era of Operating system: Features Windows, I OS, Android

Even for old days, we used moto, nokia, and wired connection but now its not about company or name. Its all about Windows, I os, & everyone's Android. Previously we bought mobile with brand name such as Nokia, vodafone etc, but today we buy smartphone's having Android Windows, I OS operating system. Its shows that where in 2004 nokia hold 85% of world market, now covers only 32% devices & in these maximum devices are old. Currently around 70% devices running on android OS. Like old saying " there is always a new tomorrow". So till wait for another steps by Windows, IOS, Android or new linux? Suhan Gorya