Re: How does incoming caller ID work - and more specifically - can caller ID source data be controlled?

On Sun, 31 May 2020 19:39:44 -0000 (UTC), Arlen Holder wrote:
> Tough question... likely only for Android freeware experts... 
> 
> How does incoming caller ID work and more specifically 
> is there a method you know of to CONTROL its source data?
> 
> Essentially, the goal is to shift incoming CallerID off of the 
> system internal default contacts sqlite database onto a 
> given privacy-oriented contacts database of your own choosing.

Telephone caller ID source data came from the telephone service (the
telephone company's machine), not Android OS or the recipient's phone
device. So, whether it can be controlled or not, depends on whether the
telephone service provide a way to do that.