Ok, one last go RR (as you really aren't going to read those links are you ?... but it is highly recommended)
There are two reasonably distinct issues here, what our personal data consists of and what Personal Data means according to the GDPR
Examples are tricky but on another Blog I frequent someone else also asked about Phone Books as in " Surely 'that would contravene GDPR then ?"
Well yes it would if folks popped by to use your phone occasionally (eg at 2am) and you had not been warned about this sufficiently and signed up for it (without it being explained properly or by default) but it was all in the lengthy small print at the back of the book. Ah yes, but then 'it says you can use their phone like that too'; That's fine, Your Choice:
Yes, many -once inconvenienced like this- would go ex-directory..... Their Choice... and so on...
The parallel here with BT FON is that many seem to have been Opted In by stealth, eg. via subtle on-line changes on their website...
IMHO Ts&Cs need to be in writing (and about now many I have alerted to this are requesting them...)
Yes; folks should read the Ts&Cs: GDPR aims to end this kind of thing as I explained in several posts now (or at least tried to);
Explicit Consent is required...
In summary I -and many others- had their Privacy (and possibly Safety) impinged upon by BT 'assuming' it was OK to show our Locations on their Map; Again for my poorly neighbour the harm/suffering caused was most probably also 'material' under GDPR Rules.
Have a good (quiet) weekend everyone, but do be careful just what you sign up for !