Today I want to examine Facebook support of operating systems. I this time there are two or three major mobile devices operating systems. However there is not only one version. Look at iOS I think it is already tenth version and every single version is incomparable with every other. So if Facebook should make updates for every platform it would be greatly difficult in matter of money and staff. So first one who will cut some versions from support will be Facebook WhatsApp. This service is almost as popular as Facebook so it will be interesting to watch what will happen. It is official that Blackberry devices with operation system version 10 will be in the group without support just as the old Symbian system from Nokia. Android and iOS will be affected too in way that Android in version 2.2 and older will be excluded along with Apple iOS 6 and older. It is sad but the progress is inevitable.