how incredible ? (the cell phone issue)

Hi now here is a website

http://www.trademe.co.nz/jobs/engineering/electrical/listing-1301053584.htm

When I went to it with my latest opera Mini 4 a message came up on my cell
phone

"YOURE USING AN INCOMPATIBLE BROWSER"

When I checked on the new

https://validator.w3.org/

it came up with 23 issues of  warnings and error  issues


My complain is I will raise with trademe my browser is not all that old, if
it was early generation about 15 years old then ok


WHAT IS HTML STANDARD USEFUL FOR

I get a similar complaint when I use the cell phone on eBay.com

>From Eric