It’s hard to quantify, you have to use it to understand the difference. IMO BlackBerry had the best onscreen keyboard, followed very closely by Windows Phone. A

It’s hard to quantify, you have to use it to understand the difference. IMO BlackBerry had the best onscreen keyboard, followed very closely by Windows Phone. And while iOS keyboard has issues with Autocorrect, it’s gotten a lot better in the recent days and is still miles ahead of Android keyboard. There is a good reason third party keyboards are so popular on Android while most people stick to the stock one on iOS despite third party keyboards being available on the platform for many years now.