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

On 2020-06-01 10:55 a.m., Arlen Holder wrote:
> On Mon, 1 Jun 2020 19:00:00 +0700, JJ wrote:
> 
>> 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.
> 
> Hi JJ,
> 
> Thanks for taking a risk at helping answer the technical question, where
> you and Gary accurately pointed out that the caller ID information comes
> from a _variety_ of cascaded sources.
> 1. Carrier "Calling Number Identification" packet information
> 2. Default "Phone app" lookup into the system sqlite contacts database
> 
> My goal is to control the _final_ caller ID display, based on a contacts
> database of my choosing, on the local device (since I do not have a default
> sqlite contacts database, simply for privacy reasons alone).

Because sqlite databases on your phone aren't private, Arlen?