Razer Phone 2, connectivity issues.

Started few days ago, if I am not moving too far away from where I am initially, everything is fine, but I feel like every time it connects to a different sever (or whatever) it has problems doing it. The funny thing it, it takes the phone about a minute to connect to call someone and often I cant even receive calls. I am using vodafone UK and the first few days was fine, no, way better than fine, but the problem is not in the provider as my Xperia XZ1 works perfectly with the same sim.