Which of the following lists the two most common smartphone operating systems? Windows and macos (Pados and Windows Linux and Chromeos Android and ios

## Step 1<br />The question asks us to identify the two most common smartphone operating systems from the given options. <br /><br />## Step 2<br />We need to consider the popularity and usage of each operating system. <br /><br />## Step 3<br />Among the options, Windows and MacOS are primarily used for desktop and laptop computers, not smartphones. <br /><br />## Step 4<br />Linux and ChromeOS are also not commonly used as smartphone operating systems. <br /><br />## Step 5<br />Android and iOS are the two most common smartphone operating systems. Android is developed by Google and is used by a variety of manufacturers, while iOS is developed by Apple and is used exclusively on iPhones.