6P ( international ) 4g+ problems

[jcdub]

I know the 6p had cat 3 and cat 6 support for LTE / 4g, but does it support cat 4?
The reason I'm asking is that my plan included 4g+ but I haven't been able to receive it. Apparently Vodafone in Ireland use cat 4 for their 4g+
Any help welcome.