Depends on what that country does in respect to certification. Many countries do a me-too certification where they'll certify something certified by the US or EU.
The hardware is all generic. That leaves the software, and in the EU, software "as such" is not patentable. It would be (is?) a travesty if patents applied regardless, rendering that patent restriction meaningless.
EPO grants them anyway, now if you want to fight the all patents covering 4G, feel free. The Unitary Patent Court will make things worse, as those patent court will have the last word over the "as such" interpretation, without any involvement of the CJEU.
As I said, a travesty.
That isn't really going to make a difference. The patents involved in cellular networking extend significantly into hardware.
My point is that this project reimplements most of that hardware stuff in software, thus not physically infringing.