To determine the version of Chrome for Windows, do the following:

1. Launch Chrome.
2. Click on the 3 Vertical Dots in the upper right corner of the browser.
3. Scroll down to and Hover over the Help option, then click on About Google Chrome in the new menu that opens.
4. A new window appears that provides information about the browser. The version is located below the browser name (Figure 1).
   
   Figure 1 (Windows):
   

To determine the version of Chrome for Mac, do the following:

1. Launch Chrome.Click on Chrome in upper left corner of computer screen (next to the Apple symbol).
2. Click About Google Chrome.
3. A new window appears that provides information about the browser. The version is located below the browser name (See Figure 2).
   
   Figure 2 (Mac):
   

To determine the version of Chrome for Android, do the following:

1. Open the Chrome App.
2. Navigate to the 3-dots in the upper-right corner.
3. Choose Settings and scroll down to the About Chrome section. 
4. The current version of Chrome will display at the top (See Figure 3).

Figure 3 (Android):

To determine the version of Chrome for iOS, do the following: 

1. Open the Chrome App.
2. Navigate to the 3-dots in the lower right-hand corner.
3. Find the Gear icon labeled Settings.
4. Scroll to the bottom and find the section labeled Google Chrome. Click here and the current Chrome version will be displayed (See Figure 4).

Figure 4 (iOS):

To determine the version of Safari for Mac, do the following:

1. Launch Safari.
2. Click on Safari in the upper-left corner of the computer screen (next to the Apple symbol).
3. Click About Safari.
4. A window appears that provides information about the browser. The version is located below the browser name (Figure 2).
   
   Figure 2:
   

To update to the latest version of Safari for Mac, do the following:

1. Click the Apple icon in the upper left corner and choose System Settings.
2. In System Settings, navigate to the General tab on the left.
3. In the General tab, choose Software Update. This will show any software that needs an update, including Safari. 

To determine the version of Safari for Windows, do the following:

1. Launch Safari.
2. Click on the gear/cogwheel icon in the upper-right corner of the browser window.
3. Click About Safari.
4. A window appears that provides information about the browser. The version is located below the browser name (Figure 1).
   
   Figure 1:
   

To determine the version of Safari for iOS (iPhone/iPad), do the following:

The version of Safari on iOS is directly correlated to the iOS version you are on. To check your iOS version do the following:

1. Go to Settings on your iOS device.
2. Scroll down and choose the General tab.
3. Within the General tab choose the About tab. Here you will see the iOS Version section with your current version displayed next to it. 

To determine the version of Mozilla Firefox for Windows, do the following:

1. Launch Mozilla Firefox.
2. Click the 3 Horizontal Lines in the upper right-hand corner and then scroll down to and click on Help.
3. Click About Firefox.
4. A window appears that provides information about the browser. The version is located below the browser name (Figure 1).
   Note: Firefox will check for updates automatically. If an update is available, it will be downloaded. When the download is complete, there will be a Restart to update Firefox button to click. 
   
   Figure 1:
   
   

To determine the version of Mozilla Firefox for Mac, do the following:

1. Launch Mozilla Firefox.
2. Click on Firefox in the upper left corner of the computer screen (next to the Apple symbol).
3. Click About Firefox.
4. A window appears that provides information about the browser. The version is located below the browser name (Figure 2).
   Note: Firefox will check for updates automatically. If an update is available, it will be downloaded. When the download is complete, there will be a Restart to update Firefox button to click. 
   
   Figure 2:
   

To determine the version of Mozilla Firefox for Android, do the following: 

1. Launch Mozilla Firefox
2. Tap the menu button
3. Tap settings
4. Scroll to the "About Firefox" section. The version number will be listed under the Firefox logo.

To determine the version of Mozilla Firefox for iOS, do the following: 

1. Lauch Mozilla Firefox
2. Tap the menu button
3. Tap settings 
4. Scroll to the "About Firefox" section. The version number will be listed in the about section. 

Figure 1