Finally in iOS 10 restrictions on the number of open tabs in the Safari browser have been removed. Now
How to close all tabs in Safari
The fastest way is to open Safari, and then press and hold the tab view button in the lower right.
This activates the “Close Tabs” option. Click on it and all the tabs will close. Happened!
There is another way
If the user is already in the tab view and works with all open, he can press and hold the “Close” button to achieve the same result.
More features in iOS 10
IOS includes a significant amount of performance enhancing elements. The main one is mode Splari View in Safari on iPad.