'There is no international regulation binding all countries in terms cellphone frequency standardisation, but that doesn't stop a phone bought in one country from working in others.' Countries have not standardized so cellphone in country A often does not work in country B. Often there is a choice where some of the cellphones sold in country A work in country B.
More importantly people are far less mobile between countries than they are between city's so the interference caused by non standard cellphones is minimal but still exists.
As to squatting, all it takes is setting up a radio station which is vary cheap. The issue fig leaf economic activity is inefficient, more importantly the having courts decide ownership is vary expensive for everyone involved.
PS: "point" references pointing such as with a finger. Bringing up an idea is often referred to as pointing out something even if no finger is involved. Swapping that which does the pointing to that which was pointed to is how you get from a 'something that is pricked' to a zero dimensional mathematical idea aka location.
Ah, I'd always assumed point was meant in the sense of 'pointy'.
I've never encountered trouble with cellphones traveling internationally, but I've only traveled in Asia/Oceania so I suppose that's not necessarily representative of the global situation.
Having the courts decide ownership may be expensive, but those costs should be weighed against the costs from having only 4 organisations owning pretty much the entire spectrum across the entire country, as is currently the case. If a court-based system resulted in for instance 20 companies now owning various parts of the spectrum and competing vigorously, the benefits of that might make up for any extra legal costs.
More importantly people are far less mobile between countries than they are between city's so the interference caused by non standard cellphones is minimal but still exists.
As to squatting, all it takes is setting up a radio station which is vary cheap. The issue fig leaf economic activity is inefficient, more importantly the having courts decide ownership is vary expensive for everyone involved.
PS: "point" references pointing such as with a finger. Bringing up an idea is often referred to as pointing out something even if no finger is involved. Swapping that which does the pointing to that which was pointed to is how you get from a 'something that is pricked' to a zero dimensional mathematical idea aka location.