> Note: also applies to telephone numbers (type=tel), URLs (type=url), and numbers (type=num) in your signup flow

While this sounds great advice for telephone numbers in theory, but in practice browsers on Android replace the normal keyboard with a big number keyboard without any "autocomplete".

So the end result is when a designer makes input(type=num) I actually have to fill in my whole phone number by hand as opposed to using the autocomplete which shows my phone number as soon as I enter the first 2 digits. I guess it's partly android's keyboard fault for hiding autocomplete suggestions on whim.