wifi rental booth

Hi I be arriving Kansai Airport on 27 Mar. I wanted to take up companies like Hire wifi and thought I could rent it from thr airport booth.

After checking the info, I notice I need 4 days to book it(not enought time now) and I thought it is a booth that I could just rent it on the day im there.

With this option not available, may I know is there any other options for me now when im at the airport? Is there a booth available for wifi rental in the airport on the same day?

I would wish to have wifi for my smartphone during the trip so I could use it for information.

Thanks all

try the cellphone company like softbank or other cellphone companies to see if they have wifi service or repaid service