Do I have a bad radio?

Hi everyone, I've the M8 International, but I'm having some issues with signal, and I can't get 4G working on it in fact 3G would barely work.

Could it be that I've an old radio?

I'm in Argentina, Buenos Aires. 4G is working just fine in others phones. (Also, while I was on Canada I had the same issue)

I don't know if this will be of any help to you guys, but this is my baseband.




Thank you!