At current day there are following most popular browsers for desktop: Internet Explorer, Google Chrome, Firefox and old Microsoft Edge. New Microsoft Edge uses Chromium project and many other browsers like Opera uses it too. Chromium project itself based on WebKit project that Apple uses for browser on Mac, iPhone and iPad. Internet Explorer is dead and only used in some corporations that developed a lot of inhouse software that requires it and port code to another browser will require a lot of money and time. Old Microsoft Edge will be quickly phased out. As result huge share of browsers will be taken by one of the variants of Chromium that is WebKit. And if we consider mobile browsers, that

5 years ago, I bought iPad Air 2 for my wife. It worked just fine but about 2 years ago I started to get complains from her about battery. She is using iPad only to read books and she was saying that iPad can discharge battery in just few hours. Reading books is not something that should discharge batter that rapidly. So, I started investigation.

That time iPad has iOS 11 and I did install few tools that show battery degradation and battery was at perfect condition. I did check if battery charge is measured correctly and iPad switched itself off at about 0%. I did calibrate battery and many other things and asked my wife to check it. She