It depends on which variant of the Note 8 you get and which carrier he wants to use it on. Google note 8 specs and look in the GSMArena link for the 4G frequencies, and Google the country name and frequencies, like hungary cellphone frequencies, then pick the carrier and compare the different variants with the carriers to find a match. Usually for Europe, the F variant of a Samsung phone will work, so that would be the N950F. But check the F's 4G frequencies against the frequencies the carrier he's going to be using to make sure.