The problem with data protection acts is that they try to protect data and it won't work cause the data they try to protect is outside people houses. Everything that is outside house is public and we just need to assume you need to provide data about it so we can verify your identity like with public key. Just to give example, when you live the house anyone can ask you anything ex. ask your neighbour about your name, anyone can read your house number, can see you or take photo of you legally or illegally that's different topic but we should protect peoples privacy inside their houses instead of trying to protect something we can't cause everyone see us how we are when we leave the house. It's basic public / private key problem. Everything outside house is public key and everything inside is private key.

So with phone we shouldn't protect people identity, address and/or company name but protect people from disruption with calls they don't want to answer and give them ability to verify who was calling, by even seeing their photo cause yes if I'm your neighbour I can see you and if I move next to you next year I can see you too. Wow.

There should be 2 call indexes one for contacts that should behave same as it's behaving now and second index for anything else that you shouldn't receive notifications but you can check this spam missed calls index and verify anyone that called you and add them to contacts - just how the old good paper phone book worked.

This empowers people to be able to make decision if I want those people to call me or not, cause you can always call back and it should be widespread when you call someone first time expect they might won't answer your call same as if you email someone they might not answer cause your mail is in spam.