Is it possible to set Caller ID only for my contacts on my iPhone?

It is not global. For the Netherlands the vertical service code to block caller ID is *31* or #31# (KPN)

(Source: https://en.wikipedia.org/wiki/Caller_ID)

There is no code to unblock for Netherlands listed, so as IdrisSeabright suggested you need to ask your carrier, or see if that information is listed on their website. The code to unblock in North America is *65, so you can experiment with that.

Vertical Service Codes, like the one in your post are carrier-specific. Your contacts will not see each other’s numbers unless they have each other’s numbers in their respective contacts apps.

I don’t know what your second paragraph means. If you don’t want to transmit your phone number when you make any call there is a setting to disable Caller ID in Settings/Apps/Phone. If you just want to do it for one call precede the number with *67

WilborII wrote:

Good afternoon,

I use an iPhone14 and have the following question. Is it possible that my Contacts see each other's numbers and unknown numbers do not see your phone number?

No, your contacts can't see any information on your phone, including other people's phone numbers. If someone shows up as an "Unknown Caller", they are calling you so they already know your number.

In other words.... Caller ID only for my Contacts. So the setting on the iPhone is Anonymous but your Contacts do see your number.

I don't know what that means.

One possibility would be..... for example #31# is now not visible. Set your iPhone to Anonymous and then a visible code for the number of your Contacts.

Caller ID is a carrier feature. You should contact yours and find out what options they offer.

WilborII wrote:

yes i understand that....but what is the prefix to see a phone number?

How would anyone here know that? As Lawrence noted above, those codes can be carrier-specific. Contact your carrier.

WilborII wrote:

Good morning,

I turn OFF Settings->Apps->Phone->Caller ID in my iPhone. Is it possible (with a setting like #31# or *67) that only my Contacts see my number and all persons/callers do not see a number?

So Caller ID is OFF and a prefix for my Contacts so that they can see that I am calling.

You woud have to enter the prefix into every number in your Contacts.

WilborII wrote:

sorry for the confusion! i thought it would be global code. the thing is….. apple community is global…..

Yes, the community is global. That means that people from all over the world participate. It does NOT mean that everyone knows how things work in every country in the world.

Those codes only apply to outgoing calls. You cannot control the caller ID visibility for incoming calls; that is controlled by the user who is calling you.