IPv4 or IPv6

Boa noite!

I hope it is alright to write in English, because I have just started to learn Portuguese.

I am thinking about getting a 4G Hotspot plus the Kanguru XL tariff. With this option, will I have an IPv4 or IPv6 address? Background: I need IPv4 for playing a certain older game online with a friend. Without IPv4 it won't work.

Muito obrigado for your help!
-Zweistein