The most common operating systems and platforms for mobile phones today are Android and iOS. The other existing Windows Phone and Blackberry OS platforms are already losing support from manufacturers, so you won't find them too often in new mobile phones.
The mobile operating system also relates to access to their services. The Google services platform includes:
You can sign into all Google platforms with one Google Account and use the services free of charge. Nowadays, you can easily create a Google account with an Android mobile phone. You use the account when first signing in and setting up the phone, which automatically gives you access to all Google services. Once you've signed in to Google Chrome, you can also transfer all your bookmarks from your computer. The Google platform is not only available on Android mobile phones, but also on Windows desktop PCs, and even on Apple iPhone and Macs.
Apple's best known services are:
Apple's platform is more exclusive than its competitors. Its services are accessible only to those who own a Windows operating system, but it's with limited access. Full access is only available to owners with iOS devices, such as iPhones, iPad tablets, Macs and MacBooks.